Guidelines for Home Energy Professionals

Standard Work Specifications for Manufactured Housing Energy Upgrades

Table of Contents

Standard Work Specifications (SWS) for Manufactured Housing (MH) Home Energy Upgrades

 

Overview

Glossary

Section 1: Using the Standard Work Specifications for Manufactured Housing Energy Upgrades

Section 2: Health and Safety

Section 3: Air Sealing

Section 4: Insulation

Section 5: Heating and Cooling

Section 6: Ventilation

Section 7: Baseload

Index

Overview

The U.S. Department of Energy’s (DOE) Weatherization Assistance Program (WAP) and the National Renewable Energy Laboratory (NREL) developed the Guidelines for Home Energy Professionals project (hereafter Guidelines) to support and promote high-quality work within the WAP. NREL is a national laboratory of the DOE, Office of Energy Efficiency & Renewable Energy (EERE), operated by the Alliance for Sustainable Energy, LLC. EERE sponsored, funded, and provided oversight of the Guidelines project. The Guidelines are also a resource for workers, contractors, training providers, homeowners, and program administrators involved in the broader home performance industry where a comprehensive, whole-house approach to building science is required.

The Guidelines project is about achieving quality in any given home energy upgrade task. To do that, the Guidelines take a three-pronged approach:

  1. Define the Work through Standard Work Specifications.

    The Standard Work Specifications (SWS) for Single-Family, Multifamily, and Manufactured Housing Energy Upgrades define the minimum acceptable outcomes for any weatherization or home performance task to be effective, durable, and safe.

  2. Validate the Training through Job Task Analyses.

    Job Task Analyses (JTAs) for the four major energy upgrade job classifications define what a worker needs to know and do to be successful. These JTAs cover job tasks for retrofit installer/technician, crew leader, energy auditor, and quality control inspector. The accreditation of energy efficiency training programs verifies that organizations training workers in the industry are qualified to teach to the JTAs.

  3. Certify the Worker through the Certification Blueprints.

    The certification blueprints synthesize SWS content and the JTAs to lay out a roadmap for developing robust worker certifications. The four Home Energy Professional worker certifications are part of and are aligned with the Guidelines efforts and target a worker’s capacity to demonstrate practical ability to perform the work of the industry.

The Guidelines project allows industry to leverage these three components to develop SWS-based training resources, quality assurance protocols, accredited training programs, and professional certifications. These tools will facilitate the development of a highly qualified work force, demonstrate worker qualifications to employers and homeowners, and enable the industry to validate the quality of its work.

Background

The Guidelines project is supported by the WAP’s National Training and Technical Assistance Plan, which supports the high-quality work performed in the WAP through the development of technical tools and resources built upon the WAP’s 30+ years of leadership in home energy upgrade work. The SWS were developed in response to a need identified by WAP technicians and program administrators for a document that would define the technical requirements of the work performed by the program.

The Guidelines development process is a historic collaboration between WAP technicians and trainers, home performance contractors, building scientists, organized labor, and other professionals throughout the home energy upgrade industry. In addition to the involvement of residential energy efficiency professionals, staff from the Environmental Protection Agency (EPA), the Occupational Safety and Health Administration (OSHA), and the National Institute for Occupational Safety and Health (NIOSH) participated in writing and reviewing the Guidelines to cover worker and occupant health and safety. The Department of Housing and Urban Development (HUD), Department of Agriculture (USDA), and the Department of Labor (DOL) have also been key partners in the development of the Guidelines.

This document is being disseminated by DOE. As such, the document was prepared in compliance with Section 515 of the Treasury and General Government Appropriations Act for Fiscal Year 2001 (Public Law 106-554) and information quality guidelines issued by DOE. Should this document constitute “influential” information, as that term is defined in DOE’s information quality guidelines or the Office of Management and Budget’s Information Quality Bulletin for Peer Review (Bulletin), the document meets the prior peer review pursuant to Section II.2 of the Bulletin. Additionally, the document was reviewed both internally and externally prior to publication. For purposes of external review, the document benefited from review through the public comment process.

Glossary

AAMA
American Architectural Manufacturers Association, www.aamanet.org
AARST
American Association of Radon Scientists and Technologists, www. aarst AARST American Association of Radon Scientists and Technologists, www.aarst.org .org
AB
Air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary
ACCA
Air Conditioning Contractors of America, www. acca ACCA Air Conditioning Contractors of America, www.acca.org .org
ACM
Asbestos-containing material
ADA
Americans with Disabilities Act
ADC
Air Diffusion Council, www.flexibleduct.org
AFUE
Annual fuel utilization efficiency
AGA
American Gas Association, www. aga AGA American Gas Association, www.aga.org .org
AHJ
Authority having jurisdiction
AHRI
Air Conditioning, Heating, and Refrigeration Institute, www.ahrinet.org
Air barrier
The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary
AL
Action level
ANSI
American National Standards Institute, www. ansi ANSI American National Standards Institute, www.ansi.org .org
ASHRAE
American Society of Heating, Refrigerating and Air-Conditioning Engineers, www. ashrae ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers, www.ashrae.org .org
ASTM
ASTM ASTM ASTM International, www.astm.org International, www. astm ASTM ASTM International, www.astm.org .org
Backdraft damper
A damper that allows air to flow in only one direction
Beaded collar
A round fitting with a ridge or lip part way down its length that prevents a flexible duct mechanically attached with a draw band from sliding off
Bonus room
A livable room that is often over a garage or in an attic area; the room commonly contains slanted ceilings and knee walls
BPI
Building Performance Institute, www. bpi BPI Building Performance Institute, www.bpi.org .org
BTU
British thermal unit
Can light
A light fixture (or can) that is recessed into the ceiling
Cathedral ceiling
A condition in which the ceiling has the same slope as the roof
Cathedralized attic
An attic that contains insulation located at the roof deck rather than the attic floor, bringing the attic space into the thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow of the house
CAZ
Combustion appliance zone
CFL
Compact fluorescent lamp
CFM
Cubic feet per minute
CGSB
Canadian General Standard Board
Closed crawl space
A foundation without wall vents that uses air-sealed walls, ground and foundation moisture control, and mechanical drying methods to control crawl space moisture. Insulation may be located at the conditioned floor level or on the exterior walls. Return pathways are not allowed from the crawl space to the living space
CO
Carbon monoxide
Conditioned basement
A below- or partially below-grade livable space with concrete or finished floor that is intentionally heated or cooled
Conditioned crawl space
A foundation without wall vents that encloses an intentionally heated and/or cooled space. Insulation is located on the exterior walls
CPSC
Consumer Product Safety Commission
CSA
Canadian Standards Association
DACUM
Developing a curriculum
dBA
A-weighted decibels
Dense pack
The process of installing loose-fill insulation to reduce air flow and perform to a stated R-value
DHW
Domestic hot water
Dielectric union
A plumbing connection that separates two different materials and does not allow them to chemically react and break down
Draft regulator
A device that functions to maintain a desired draft in the appliance by automatically reducing the draft to the desired value. Source: National Fire Protection Association 54, 2012
Dual-Cooling Up-Duct
Piece of duct located between the living space and attic to allow air flow in pressurized homes having evaporative coolers
Efflorescence
Deposits of crystals or salts left attached to masonry materials after moisture has evaporated off of the surface
Egress window
A window that people can escape through in an emergency
EIFS
Exterior insulation and finish systems
EIMA
EIFS EIFS Exterior insulation and finish systems Industry Members Association
Energy factor
Measure of overall efficiency for a variety of appliances. For water heaters, the energy factor Energy factor Measure of overall efficiency for a variety of appliances. For water heaters, the energy factor is based on three factors: 1) the recovery efficiency, or how efficiently the heat from the energy source is transferred to the water; 2) stand-by losses, or the percentage of heat lost per hour from the stored water compared to the content of the water: and 3) cycling losses. For dishwashers, the energy factor is defined as the number of cycles per kWh of input power. For clothes washers, the energy factor is defined as the cubic foot capacity per kWh of input power per cycle. For clothes dryers, the energy factor is defined as the number of pounds of clothes dried per kWh of power consumed. is based on three factors: 1) the recovery efficiency, or how efficiently the heat from the energy source is transferred to the water; 2) stand-by losses, or the percentage of heat lost per hour from the stored water compared to the content of the water: and 3) cycling losses. For dishwashers, the energy factor Energy factor Measure of overall efficiency for a variety of appliances. For water heaters, the energy factor is based on three factors: 1) the recovery efficiency, or how efficiently the heat from the energy source is transferred to the water; 2) stand-by losses, or the percentage of heat lost per hour from the stored water compared to the content of the water: and 3) cycling losses. For dishwashers, the energy factor is defined as the number of cycles per kWh of input power. For clothes washers, the energy factor is defined as the cubic foot capacity per kWh of input power per cycle. For clothes dryers, the energy factor is defined as the number of pounds of clothes dried per kWh of power consumed. is defined as the number of cycles per kWh of input power. For clothes washers, the energy factor Energy factor Measure of overall efficiency for a variety of appliances. For water heaters, the energy factor is based on three factors: 1) the recovery efficiency, or how efficiently the heat from the energy source is transferred to the water; 2) stand-by losses, or the percentage of heat lost per hour from the stored water compared to the content of the water: and 3) cycling losses. For dishwashers, the energy factor is defined as the number of cycles per kWh of input power. For clothes washers, the energy factor is defined as the cubic foot capacity per kWh of input power per cycle. For clothes dryers, the energy factor is defined as the number of pounds of clothes dried per kWh of power consumed. is defined as the cubic foot capacity per kWh of input power per cycle. For clothes dryers, the energy factor Energy factor Measure of overall efficiency for a variety of appliances. For water heaters, the energy factor is based on three factors: 1) the recovery efficiency, or how efficiently the heat from the energy source is transferred to the water; 2) stand-by losses, or the percentage of heat lost per hour from the stored water compared to the content of the water: and 3) cycling losses. For dishwashers, the energy factor is defined as the number of cycles per kWh of input power. For clothes washers, the energy factor is defined as the cubic foot capacity per kWh of input power per cycle. For clothes dryers, the energy factor is defined as the number of pounds of clothes dried per kWh of power consumed. is defined as the number of pounds of clothes dried per kWh of power consumed.
Envelope
The separation between the interior and exterior environments of a building that includes a combination of air and thermal barrier
EPA
U.S. Environmental Protection Agency, www. epa EPA U.S. Environmental Protection Agency, www.epa.gov .gov
ERV
Energy recovery ventilator
ESP
External static pressure
Exfiltration
The uncontrolled passage of inside air out of a building through unintended leaks in the building envelope Envelope The separation between the interior and exterior environments of a building that includes a combination of air and thermal barrier
Exterior storm window
An additional window assembly installed on the exterior of the main window
Finished attic
An attic space that has been converted into an additional living space of the house
GFCI
Ground-fault circuit interrupter
GPM
Gallons per minute
Hi-limit switch
A protective electronic switch that keeps a burner from continuing to operate and damage the appliance
HRV
Heat recovery ventilator
HVAC
Heating, ventilation, and air conditioning
HVI
Home Ventilation Institute
Hydrophobic
Lacking affinity for water; tending to repel and not absorb water; tending not to dissolve in, mix with, or be wetted by water
I-P
Inch-pound
IAQ
Indoor air quality
IBC
International Building Code
IBR
Institute of Boiler and Radiator Manufacturers
IC
Insulation contact
ICC
International Code Council
IECC
International Energy Conservation Code
IFGC
International Fuel Gas Code
Ignition barrier
Any layer of material that protects another from catching fire due to heat or spark
IMC
International Mechanical Code
Infiltration
The uncontrolled passage of outside air into a building through unintended leaks in the building envelope Envelope The separation between the interior and exterior environments of a building that includes a combination of air and thermal barrier
Interior storm window
An additional window assembly installed on the interior of the main window
IPM
Integrated Pest Management
IRC
International Residential Code
IWC
Inches of water column
JTA
Job task analysis
Knee wall
Any wall between the conditioned space and the attic
KSA
Knowledge, skills, and abilities
LED
Light-emitting diode
MERV
Minimum efficiency reporting value
Modulating systems
Heating systems with the ability to adjust the heating capacity and output based on the heating demand
MSDS
Material Safety Data Sheet
NAHB
National Association of Home Builders, www. nahb NAHB National Association of Home Builders, www.nahb.com .com
NAIMA
North American Insulation Manufacturers Association, www. naima NAIMA North American Insulation Manufacturers Association, www.naima.org .org
NATE
North American Technician Excellence, www.natex.org
NEBB
National Environmental Balancing Bureau, www. nebb NEBB National Environmental Balancing Bureau, www.nebb.org .org
NEC
National Electrical Code
NFPA
National Fire Protection Association, www. nfpa NFPA National Fire Protection Association, www.nfpa.org .org
NIOSH
National Institute for Occupational Safety and Health, www.cdc.gov/ niosh NIOSH National Institute for Occupational Safety and Health, www.cdc.gov/niosh
Orphaned equipment
Condition when one smaller combustion appliance exists after being commonly vented with a larger appliance. What remains is a larger exhaust flue or chimney than is necessary for the remaining smaller appliance
Orphaned water heater
Condition when one smaller combustion appliance (e.g., water heater) exists after being commonly vented with a larger appliance. What remains is a larger exhaust flue or chimney than is necessary for the water heater
OSHA
U.S. Occupational Safety and Health Administration, www. osha OSHA U.S. Occupational Safety and Health Administration, www.osha.gov .gov
PEL
Permissable exposure limit
Perm rating
The measurement of a material's ability to allow the transfer of water vapor through the material
PPE
Personal protective equipment
Programmable thermostat
A thermostat designed to adjust the temperature according to a series of programmed settings that take effect at different times of the day
Psi
Pounds per square inch
Psig
Pound per square inch gauge
Reverse or upslope lapping technique
Upper course laps under a lower course to keep the moisture under the barrier
Rigid material
Drywall, oriented strand board, duct board, cardboard, or any other stiff product that may support the load of insulation while serving as a durable air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary
RPA
Radiant Professional Alliance
RRP
Renovation, repair, and painting
Sealant foam
One- or two-component polyurethane foam typically applied as a bead and used to control air leakage as part of an air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary system within the building envelope Envelope The separation between the interior and exterior environments of a building that includes a combination of air and thermal barrier
Service switch
An electrical switch that controls the complete flow of electricity to a mechanical device
SHGC
Solar heat gain coefficient
SI
Système International
SMACNA
Sheet Metal and Air Conditioning Contractors' National Association, www. smacna SMACNA Sheet Metal and Air Conditioning Contractors' National Association, www.smacna.org .org
SPF
Spray polyurethane foam
SPFA
Spray Polyurethane Foam Alliance
SSE
Steady state efficiency
Standby loss
Heat loss through the outer part of a water heater. Energy that is used even when a device is turned off
Storm door
An additional door assembly that is installed on the exterior of the main door
Strip heat
A function of a heat pump that uses energy-intensive resistance heat to warm conditioned space when the heat pump is unable to satisfy the heating demand; also provides emergency heat backup for heat pumps
Support material
Typically, wooden strips that provide support over holes greater than 24" in size for less rigid air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary materials
T&TA
Training and Technical Assistance
TABB
Testing and Balancing Bureau, www.tabbcertified.org
TDC
Transverse duct connector
TDF
Transverse duct flange
Thermal boundary
The separation between the interior and exterior environments of a building that slows heat flow
Thermal resistance
The insulation or other building material that offers the primary barrier to thermal transmittance. R-value is a measurement of thermal resistance Thermal resistance The insulation or other building material that offers the primary barrier to thermal transmittance. R-value is a measurement of thermal resistance
Tie band
A strap, often made of nylon, that mechanically squeezes a flexible duct to a fitting. Must have a minimum performance temperature rating of 165° (per UL UL Underwriters Laboratories 181A-type test) and a minimum tensile strength rating of 50 pounds
UL
Underwriters Laboratories
Unconditioned basement
A below- or partially below-grade livable space with concrete or finished floor without intentional heating or cooling
UV
Ultraviolet
Vapor barrier
A material that retards the passage of water vapor and contains a perm rating Perm rating The measurement of a material's ability to allow the transfer of water vapor through the material of less than 1
Vapor retarder
A material that slows the passage of water vapor and contains a perm rating Perm rating The measurement of a material's ability to allow the transfer of water vapor through the material above 1
Vaulted ceiling
A condition where a non-horizontal ceiling has a different slope than the roof
Vented crawl space
A foundation that uses wall vents as a primary means to control moisture. Insulation is located at the conditioned floor level above the crawl space
VOC
Volatile organic compound
WAP
DOE Weatherization Assistance Program
WDMA
Window and Door Manufacturers Association, www. wdma WDMA Window and Door Manufacturers Association, www.wdma.com .com
Wg
Water gauge
Wind intrusion
A condition where air from outside of a structure can pass through insulation and reduce its performance
Wood/materials shrinkage
A loss of dimension and weight as a result of drying the structure and operating the building at lower relative humidity

Section 1: Using the Standard Work Specifications for Home Energy Upgrades

The SWS synthesize more than 30 years of building science expertise within the WAP program and the greater industry by identifying the desired outcomes of the individual measures performed during a whole-building energy upgrade. They combine original content with references to relevant codes and/or technical standards that currently exist as independent, stand-alone documents.

Definition of Multifamily Housing

The definition of multifamily housing used for the SWS is:  any dwelling that contains five or more living units, which share one or more building systems and has three categories:

Low-rise: 1-3 stories with any shared building system

Mid-rise: 4-5 stories with any shared building system

High-rise: 6 stories or greater

Definition of Manufactured Housing

The definition for manufactured housing as used in the Manufactured Housing SWS document is: a single-family home that contains a permanently affixed chassis, allowing the dwelling to be transported by road. Traditionally, these homes have been called mobile homes and, in essence, the Manufactured Housing SWS document is using the term “manufactured housing” synonymously with “mobile homes.”

The Whole-House/Building Assessment

The whole-house/building assessment or energy audit is a vital component of the home energy retrofit process. It is imperative that an assessment of the whole-house/building is performed by a qualified auditor who is following a high-quality audit procedure recognized by the WAP or other program sponsor. Once the auditor has conducted a whole-house/building assessment and has developed a list of recommended measures, the SWS can be used to identify the desired outcomes of those measures and to assess the quality of the completed work.  The SWS document is not meant to replace existing engineering and design specifications, but rather to be complimentary.

The Components of the SWS

The SWS identify the desired outcomes of a particular energy efficiency measure. They define the outcomes, stated as objectives, and then list the minimum specifications that are necessary for a properly installed measure to meet those outcomes (see sample specification).

Sample Specification

Sample specification

SWS Numbering Scheme

The details within the SWS have been indexed and numbered in a way that provides readers with suggestions as to what is contained in a specific detail, and allows for additions as the document expands without disrupting the numbering sequence. The SWS are organized into four layers. From general to specific, those layers are section, topic, subtopic, and detail. Each section contains multiple topics, each topic may be further divided into subtopics, and each subtopic contains one or more details.

Dissecting a Detail Number

Numbering scheme

There are seven sections in the SWS:

  1. Using the Standard Work Specifications
  2. Health and Safety
  3. Air Sealing
  4. Insulation
  5. Heating and Cooling
  6. Ventilation
  7. Baseload

The section number is the first digit of a given detail. As illustrated above, any detail number beginning with 3 is from Section 3—Air Sealing.

Within each section, another set of numbers has been assigned to topics. These are represented in the first two digits in the second number in the detail titles. Some numbers are not yet in use but are reserved for future expansion of the SWS. In the example shown above, .10XX indicates that the detail is in the topic “Attics.” A detail related to insulating attics would be 4.10XX.X. For example,  4.1001.4 Vented Eave or Soffit Baffles.

Here is a full list of topic designations:

.0100 - .0900 – Health and Safety Issues

.0100 Safe Work Practices
.0200 Combustion Safety
.0300 Safety Devices
.0400 Moisture
.0500 Radon
.0600 Electrical
.0700 Occupant Education and Access
.0800 and .0900 Reserved for Future Additions

.1000 - .2900 – Parts of the Building

.1000 Attics
.1100 Walls
.1200 Windows and Doors
.1300 Floors
.1400 Basements and Crawl Spaces
.1500 Attached Garages
.1600 Ducts
.1700+ Reserved for Future Additions

.3000 - .5900 – Heating and Cooling Systems

.3000 Forced Air
.3100 Hydronic Heating
.3200 Shading
.3300+ Reserved for Future Additions

.6000 - .7900 – Ventilation

.6000 Exhaust
.6100 Supply
.6200 Whole Building
.6300+ Reserved for Future Additions

.8000 - .9800 – Baseload

.8000 Plug Load
.8100 Water Heating
.8200+ Reserved for Future Additions

These topic numbers align across sections.

Additionally, these number pairs have been reserved to align across sections and topics.

.88 Special Considerations
.99 Additional Resources

Used at the topic level, it looks like this:

6.9901.1 Supplemental Ventilation Information - ASHRAE 62.2

This is the first detail in Section 6—Ventilation, topic .99 Additional Resources, subtopic 01 Codes and Standards Resources.

Used at the subtopic level, it looks like this:

6.6288.1 Sound Rating Limits

This is the first detail in Section 6—Ventilation, topic .62 Whole Building, subtopic 88 Special Considerations.

Codes and Standards

While the SWS will help identify the desired outcomes of energy efficiency measures in a weatherization or home energy upgrade project, they are not a replacement for the codes and/or technical standards mandated by a particular jurisdiction or a replacement for the manufacturer’s stated installation requirements. State, local, or municipal code or ordinance has legal precedence and users should obtain copies of the applicable codes and standards for their jurisdiction before performing the work.

Numerous national standards bodies have provided significant insight and input on the SWS. The following serve as the primary referenced codes and standards. In order to limit redundancy, additional standards that are already referenced in the following codes are not restated within the Guidelines. However, when a standard is not addressed by the following codes, it is referenced within the Guide to Referenced Standards section as an additional resource. It is important to note that references to codes and standards within the SWS documents do not constitute an endorsement by the WAP.

  • IBC (International Building Code)
  • IECC (International Energy Conservation Code)
  • IFGC (International Fuel Gas Code)
  • IMC (International Mechanical Code)
  • IPC (International Plumbing Code)
  • IRC (International Residence Code)
  • NFPA 54 (National Fuel Gas Code)
  • NFPA 70 (National Electrical Code)
  • NPFA 31 (Standard for the Installation of Oil-Burning Equipment)
  • UMC (Uniform Mechanical Code)
  • UPC (Uniform Plumbing Code)

When codes and standards are referenced in the SWS, the year of the reference is not included. The reader should refer to the most recent version of the reference that is currently published.

Standards are referenced in two ways:

  1. Embedded in the specification in either the objective or specification column. This indicates that the referenced standard is a representative approach to meet the specification.
  2. Listed in the Guide to Referenced Standards.

The Role of the U.S. Environmental Protection Agency Healthy Indoor Environment Protocols for Home Energy Upgrades in the SWS

DOE and the EPA have collaborated closely throughout the production of the Guidelines and EPA’s Healthy Indoor Environment Protocols for Home Energy Upgrades. In particular, the two agencies have strived to ensure that the majority of the EPA minimum actions are fundamentally integrated and referenced as appropriate in the Standard Work Specifications. The intent is that upgrade workers following the DOE document will inherently achieve most of the EPA minimum recommendations.

The EPA protocols can be located at: www.epa.gov/iaq/homes/retrofits.html and should be referenced and utilized by energy upgrade workers.

The EPA protocols also provide additional detailed information on healthy retrofit practices and address some situations not specifically covered in the SWS including below-ground contaminants from sewer gases and soil or groundwater contamination, building products/ materials emissions, and removal of fluorescent light ballasts containing polychlorinated biphenyls (PCBs). Additionally, both DOE and the EPA fully support the upgrade industry going above and beyond the minimum requirements by adopting the EPA-recommended expanded actions. Both agencies also understand that financial or programmatic constraints may impede this in certain cases.[1]

The EPA Healthy Indoor Environment Protocols for Home Energy Upgrades focus primarily on the health and safety of the building occupants. The EPA document includes recommended assessment protocols to identify indoor environmental quality issues, recommended minimum actions, and opportunities for expanded actions to promote improved occupant health through home energy upgrades. Each of these is described below.

  • Assessment protocols provide EPA-recommended protocols for evaluating both existing conditions of concern and the potential for additional health concerns that may arise as a result of upgrade activities.
  • Minimum actions include actions that weatherization and home energy upgrade contractors should take to help ensure that the work they perform in a home does not introduce new health concerns or make existing conditions worse. These often reference existing national standards; however, work should be conducted in compliance with state and local requirements as well.
  • Expanded actions include recommended further indoor environment improvements that can be made during many home energy upgrade projects. The expanded actions are improvements that can be performed by home energy upgrade workers with proper training and sufficient resources. National standards and guidance are referenced; however, work should be conducted in compliance with state and local requirements as well.

The Importance of Qualified Professionals

It is important for the user to understand the necessity of ensuring that all contractors undertaking the work outlined in the SWS are properly qualified. There are a number of certification bodies and industry groups that provide verification of an individual’s qualifications to perform certain types of work. This is particularly important in tasks related to heating, ventilating, and air conditioning (HVAC), electrical systems, and plumbing. Professional contractors who are credentialed through well-established national organizations can help ensure that this work is performed safely and correctly. There are often licensure requirements at the state or local level.

Within the SWS, there is a note placed in each detail in which a licensed or credentialed professional may be required to perform certain tasks. The reader is encouraged to ensure that all work is carried out in accordance with requirements set forth by the authority having jurisdiction

The WAP requires its contractors to adhere to all codes, licensing, and certification requirements in the jurisdiction in which they operate.

 

[1] Weatherization Program Notice 11-6 provides information related to the implementation and installation of health and safety measures as part of the WAP. This guidance makes available recommendations to WAP Grantees as they develop their Health and Safety (H&S) Plans and procedures. The guidance also provides clarity to grantees on H&S measures and costs that are allowed as part of this energy program. WPN 11-6 (Program Year 2011, the “dash 6” will be the reference for subsequent H&S guidance in future program years) is available at www.waptac.org under rules and guidance.  

Section 2:Health and Safety

2.0100.1 Global Worker Safety

Topic: 
Safe Work Practices
Subtopic: 
Safe Work Practices
Desired Outcome: 
Work completed safely without injury or hazardous exposure
Note: 
The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
For supporting material, see Calculation of the Infiltration Credit and Building America Solution Center.

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0100.1a
Prevention through design

Design will be incorporated to eliminate or minimize hazards (e.g., material selection, access to equipment for installation and maintenance, placement of equipment, ductwork and condensate lines)

Prevent worker injuries

Reduce risk exposure to toxic substances and physical hazards

1691
2.0100.1b
Hand protection

Durable and wrist-protecting gloves will be worn that can withstand work activity

Minimize skin contact with contaminants

Protect hands from hazards

1692
2.0100.1c
Respiratory protection

If the risk of airborne contaminants cannot be prevented, proper respiratory protection will be provided and worn (e.g., N-95 or equivalent face mask)

When applying low pressure 2-component spray polyurethane foam, air purifying masks with an organic vapor cartridge and P-100 particulate filter will be used

When applying high-pressure SPF insulation, supplied air respirators (SARs) will be used

Consult MSDS for respiratory protection requirements

OSHA 1910.134 shall be followed for the implementation of a respiratory protection program

Minimize exposure to airborne contaminants (e.g., insulation materials, mold spores, feces, bacteria, chemicals)

1693
2.0100.1d
Electrical safety

An electrical safety assessment will be performed

All electric tools will be protected by ground-fault circuit interrupters (GFCI)

Three-wire type extension cords will be used with portable electric tools

Worn or frayed electrical cords will not be used

Water sources (e.g., condensate pans) and electrical sources will be kept separate

Metal ladders will be avoided

Special precautions will be taken if knob and tube wiring is present

Aluminum foil products will be kept away from live wires

For arc flash hazards, NFPA 70E will be consulted

Avoid electrical shock and arc flash hazards

1694
2.0100.1e
Carbon monoxide (CO)

All homes will have a carbon monoxide alarm

Ambient CO will be monitored during combustion testing and testing will be discontinued if ambient CO level inside the home or work space exceeds 35 parts per million (ppm)

Protect worker and occupant health

1695
2.0100.1f
Personal Protective Equipment

MSDS and OSHA regulations will be consulted for equipment and protective clothing would be worn if contaminants are present(e.g., insulation materials)

Eye protection will always be worn (e.g., safety glasses, goggles if not using full-face respirator)

Protect worker from skin contact with contaminants

Minimize spread of contaminants

Provide eye protection

1696
2.0100.1g
Confined space safety

Spaces with limited ingress and egress and restricted work area will be considered confined space

Access and egress points will be located before beginning work

Inspection will be conducted for hazards, such as damaged or exposed electrical conductors, mold, sewage effluent, friable asbestos or fiberglass, pests, and other potential hazards

Adequate ventilation will be provided

Use of toxic material will be reduced

Prevent build-up of toxic or flammable contaminants

Reduce risk to the workers in the confined space

Provide adequate access and egress points

Prevent electrical shock

1697
2.0100.1h
Power tool safety

Power tools will be inspected and used in accordance with manufacturer specifications and OSHA regulations to eliminate hazards such as those associated with missing ground prongs, ungrounded circuits, misuse of power tools, noise, and improper or defective cords or extension cords.All tools must be maintained in proper operating condition with all guards securely in place

All devices used will be verified as GFCI protected or double insulated

Exhaust gases from compressors and generators will be prevented from entering interior space

Prevent power tool injuries

Prevent buildup of toxic or flammable contaminants

1698
2.0100.1i
Chemical safety

Hazardous materials will be handled in accordance with manufacturer specifications, MSDS and OSHA standards to eliminate hazards associated with volatile organic compounds (VOCs), sealants, insulation, contaminated drywall, dust, foams, asbestos, lead, mercury, and fibers

Appropriate personal protective equipment (PPE) will be provided

Workers will be trained on how to use PPE

Workers will be expected to always use appropriate PPE during work

Prevent worker exposure to toxic substances

1699
2.0100.1j
Ergonomic safety

Appropriate PPE will be used (e.g., knee pads, bump caps, additional padding)

Proper equipment will be used for work

Proper lifting techniques will be used

Prevent injuries from awkward postures, repetitive motions, and improper lifting

1700
2.0100.1k
Hand tool safety

Hand tools will be maintained in safe working order and used for intended purpose

Prevent injuries

1701
2.0100.1l
Slips, trips, and falls

Caution will be used around power cords, hoses, tarps, and plastic sheeting

Precautions will be taken when ladders are used, when working at heights, or when balancing on joists

Walk boards will be used when practical

When scaffolding is used, manufacturer set-up procedures will be followed

Appropriate footwear and clothing will be worn

Prevent injuries due to slips, trips, and falls

1702
2.0100.1m
Thermal stress

Ensure staff is aware of risks during extreme weather including the symptoms of heat stroke, heat exhaustion, and hypothermia

Appropriate ventilation, hydration, rest breaks, and cooling equipment will be provided

911 will be dialed when necessary

Prevent heat stroke, heat stress, and cold stress related injuries

1703
2.0100.1n
Fire safety

Ignition sources will be identified and eliminated (e.g., turn off pilot lights and fuel supply)

Use of flammable material will be reduced and fire-rated materials will be used

Prevent a fire hazard

1704
2.0100.1o
Asbestos-containing materials (ACM)

Assess potential asbestos hazard; if unsure whether material contains asbestos, contact a qualified asbestos professional to assess the material and to sample and test as needed

If suspected ACM is in good condition, do not disturb

If suspected ACM is damaged (e.g., unraveling, frayed, breaking apart), immediately isolate the area(s)

For suspected ACM that is damaged or that must be disturbed as part of the retrofit activity, contact an asbestos professional for abatement or repair in accordance with federal, state, and local requirements; only a licensed or trained professional may abate, repair, or remove ACM

When working around ACM, do not:

  • Dust, sweep, or vacuum ACM debris
  • Saw, sand, scrape, or drill holes in the material
  • Use abrasive pads or brushes to strip materials

Asbestos abatement or repair work should be completed prior to blower door testing; exercise appropriate caution when conducting blower door testing where friable asbestos or vermiculite attic insulation is present to avoid drawing asbestos fibers into the living space (i.e., use positively pressurized blower door testing) unless the material has been tested and found not to contain asbestos

Protect workers and occupants from potential asbestos hazards

1705
2.0100.1p
Lead paint assessment

Presence of lead based paint in pre-1978 homes will be assumed unless testing confirms otherwise

The Environmental Protection Agency (EPA) Renovation, Repair, and Painting (RRP) Program Rule (40 CFR Part 745) in pre-1978 homes and proposed changes to this rule (Federal Register/Vol. 75, No. 87/May 6, 2010) will be complied with, to be superseded by any subsequent final rulemaking or any more stringent state or federal standards

Protect workers and occupants from potential lead hazards

1706
2.0100.1q
Site security

Work site will be secured to prevent unauthorized entry

Temporarily disconnected eqipment will be locked up and tagged out

All loose or unbagged trash and unused materials will be removed from work site daily

Protect the occupant from exposure to potential hazards

6906
2.0100.1r
Crawl space safety

The source of all contaminants (e.g., sewage,dead animals,needles) will be corrected,repaired,or removed before performing inspections that require complete access to the crawl space

If appropriate, the contaminant will be neutralized and/or a protective barrier will be installed in the area

Ensure work safety

Prevent worker exposure to hazards

6907

2.0101.1 Air Sealing Worker Safety

Topic: 
Safe Work Practices
Subtopic: 
Air Sealing
Desired Outcome: 
Work completed safely without injury or hazardous exposure
For supporting material, see Referenced Standards and Building America Solution Center.

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0101.1a
Worker safety

Worker safety specifications will be in accordance with SWS Global Worker Safety

Complete safety action plan based on hazard; plan will be in place for each job site

Prevent injury

Minimize exposure to health and safety hazards

4312
2.0101.1b
Moisture precautions for crawl spaces and basements

Exposed earth will be covered with a continuous, durable, and sealed class I vapor retarder that is suitable for ground contact exposure to normal service traffic

Causes of air dew points greater than 55°F will be identified and eliminated in crawl spaces connected to conditioned spaces

Seasonal dehumidification (e.g., dehumidified or conditioned with air conditioner supply) will be recommended where humidity sources, including outdoor air incursion, cannot be eliminated

Undesigned penetrations between the crawl space or basement and the outdoors will be sealed

Holes between the crawl space or basement and the living space will be sealed

Open sumps and intentional slab or vapor barrier penetrations will be sealed or capped to control moisture and radon levels

Ensure durability of repairs

Reduce potential for occupant exposure to mold and other moisture-related hazards

Reduce potential for occupant exposure to radon and other soil gases

4313
2.0101.1c
Moisture precautions: living space

Moisture sources in the building will be identified and reduced or removed

Where local ventilation will be installed, (e.g., baths, kitchens), exhaust units will be vented to the outdoors in accordance with ASHRAE 62.2

Unvented heaters will be removed except when used as a secondary heat source and when it can be confirmed that the unit is listed to ANSI Z21.11.2

Unvented gas or propane cooking stoves will be tested for carbon monoxide (CO) per BPI Standard and corrected as required before air sealing work begins

If replacing air conditioning system, new system will be sized to optimize dehumidification

Properly sized dehumidifier will be installed to satisfy latent and sensible loads, when necessary

ANSI/ACCA 2 Manual J-2011 (Residential Load Calculation) will be used to size replacement AC and heat pumps

Enhanced dehumidification will be installed in the Gulf Coast region areas on the Gulf side of the warm humid line on the International Energy Conservation Code map

Ensure durability of building components and repairs

Reduce potential for occupant exposure to mold and other moisture-related hazards

Reduce potential occupant exposure to CO

4314
2.0101.1d
Moisture precautions for exterior water

Before air sealing and insulating building components, exterior water management will be addressed

Before insulating basement or crawl space walls near wet areas, surface water pooling near the foundation will be addressed by repairing, modifying, or replacing gutters and downspouts

Grading and subsurface drainage at critical locations (e.g., localized drain and grading beneath valleys) will be in accordance with EPA Indoor airPLUS Construction Specifications Section 1.1

Reduce potential for occupant exposure to mold and other moisture-related hazards

4315

2.0102.1 Insulation Worker Safety

Topic: 
Safe Work Practices
Subtopic: 
Insulation
Desired Outcome: 
Work is completed safely without injury or hazardous exposure
For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0102.1a
Worker safety

Worker safety specifications will be followed in accordance with SWS 2.0100 Global Worker Safety

Prevent injury

Minimize exposure to health and safety hazards

6913
2.0102.1b
Asbestos containing materials (ACM)

OSHA asbestos abatement protocol 29 CFR 1926.1101 will be followed if vermiculite insulation is present

Assess potential asbestos hazard; if unsure whether material contains asbestos, contact a qualified asbestos professional to assess the material, and to sample and test as needed

If suspected ACM is in good condition, do not disturb

If suspected ACM is damaged (e.g., unraveling, frayed, breaking apart), immediately isolate the area(s)

For suspected ACM that is damaged or that must be disturbed as part of the retrofit activity, contact an asbestos professional for abatement or repair, in accordance with federal, state, and local requirements; only a licensed or trained professional may abate, repair, or remove ACM

When working around ACM, do not:

  • Dust, sweep, or vacuum ACM debris
  • Saw, sand, scrape, or drill holes in the material
  • Use abrasive pads or brushes to strip materials

Asbestos abatement or repair work should be completed prior to blower door testing; exercise appropriate caution when conducting blower door testing where friable asbestos or vermiculite attic insulation is present to avoid drawing asbestos fibers into the living space (i.e., use positively pressurized blower door testing) unless the material has been tested and found not to contain asbestos

Protect workers and occupants from potential asbestos hazards

6914
2.0102.1c
Materials

All materials will be handled in accordance with manufacturer specifications or material safety data sheets (MSDS) standards

Eliminate hazards associated with incorrect, defective, or improperly used or installed materials

6916
2.0102.1d
Lead paint assessment

Presence of lead based paint in pre-1978 homes will be assumed unless testing confirms otherwise

The Environmental Protection Agency (EPA) Renovation, Repair, and Painting (RRP) Program Rule (40 CFR Part 745) in pre-1978 homes and proposed changes to this rule (Federal Register/Vol. 75, No. 87/May 6, 2010) will be complied with, to be superseded by any subsequent final rule making or any more stringent state or federal standards

Protect worker and occupant from potential lead hazards

6917

2.0103.2 Heating and Cooling Worker Safety

Topic: 
Safe Work Practices
Subtopic: 
Heating and Cooling Equipment
Desired Outcome: 
Work completed safely without injury or hazardous exposure

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0103.2a
Worker safety

Follow all worker safety specifications in SWS 2.0100 Global Worker Safety section

Prevent injury

Minimize exposure to health and safety hazards

3928
2.0103.2b
Mercury

When replacing existing thermostats, identify and dispose of any mercury containing thermostats in accordance with Environmental Protection Agency (EPA) guidance

Protect worker and occupant from mercury exposure

3930
2.0103.2c
Asbestos

Suspected asbestos hazards will be identified in furnaces (e.g., gaskets), wood stoves, zonal heating devices, electrical wiring insulation, boilers, and pipe insulation and corrected in accordance with EPA guidance

Workers will take precautionary measures to avoid exposure

Protect worker and occupant from asbestos exposure

3932
2.0103.2d
Personal protective equipment (PPE)

Workers will wear personal protective equipment (PPE) as needed to protect themselves against exposure to hazards (e.g., pests, sewage, flooded duct work, mold, chemicals, scat, viruses)

Long sleeves and long pants should be worn as additional protection from liquid nitrogen and other hazardous materials

Protect worker from exposure to hazards

Protect worker from skin contact with liquid nitrogen

3934
2.0103.2e
Combustible gas detection

Worker will check for presence of combustible gas leaks before work begins

Leaks will be repaired before work is performed

Protect worker and occupant from exposure to hazards

3936
2.0103.2f
Carbon monoxide (CO)

Workers will check for presence of ambient CO before and during work

CO issues will be addressed before work is performed or continued

Protect worker and occupant from exposure to hazards

3938
2.0103.2g
Sealant

Pipes will be sealed by a certified professional with an approved fastening process and sealant in accordance with manufacturer specifications (International Fuel Gas Code)

Gas lines will be leak free when tested with an electronic combustible gas leak detector and verified with bubble solution

OR

Gas lines will be leak free when tested by a standing pressure test that meets the approval of the local code

Install gas lines with no leaks

3940
2.0103.2h
Safety devices

A secondary LP safety detector system (valve, exhaust fan, alarm light) will be installed by a certified professional for propane piping installed below grade

When installing new equipment, a shut off valves will be installed by a certified professional at each gas appliance (ANSI Z21.15)

Detect accumulation of dangerous levels of propane in below-grade areas

Isolate appliances from the rest of the system for emergencies, removal, or repairs

3942

2.0105.1 Baseload Worker Safety

Topic: 
Safe Work Practices
Subtopic: 
Baseload
Desired Outcome: 
Work is completed safely without injury or hazardous exposure

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0105.1a
Worker safety

All worker safety specifications in SWS 2.0100 Global Worker Safety section will be followed

Prevent injury

Minimize exposure to health and safety hazards

1720

2.0105.2 Licensed Electrical Professional

Topic: 
Safe Work Practices
Subtopic: 
Baseload
Desired Outcome: 
Work completed safely without injury from shock or arc flash
For supporting material, see Referenced Standards.

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0105.2a
Worker safety

Any fixture, ballast, line voltage control, receptacle, or circuit modification will be performed by a licensed electrical professional in accordance with ANSI/NFPA 70 or as required by the authority having jurisdiction

All workers will comply with ANSI/NFPA 70E

All OSHA standard practices will be followed

Prevent property damage

Ensure worker safety

4320

2.0106.1 Material Selection, Labeling, and Material Safety Data Sheets (MSDSs)

Topic: 
Safe Work Practices
Subtopic: 
Material Safety
For supporting material, see Building America Solution Center.
Desired Outcome: 
Occupant and worker risk from hazardous materials minimized

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0106.1a
Material selection

Materials that do not create long-term health risks for occupants and workers will be used

Improve indoor air quality in the living space

1721
2.0106.1b
Material labels

Manufacturer specifications will be followed

Reduce risk of exposure to harmful substances

Follow safety procedures

1722
2.0106.1c
Material Safety Data Sheets (MSDSs)

MSDSs will be provided onsite and available during all work

Assess exposure risk

Prepare a response in case of emergency

1723

2.0107.5 Prework Qualifications (Home Installation)

Topic: 
Safe Work Practices
Subtopic: 
Basements and Crawl Spaces
Desired Outcome: 
Manufactured home is properly installed

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0107.5a
Installation deficiencies

Any installation deficiencies that may affect worker safety or integrity or installed measures will be repaired before starting work

Ensure site is safe and ready for upgrade

3956
2.0107.5b
Stabilization

Home must be stabilized in accordance with manufacturer specifications or local authority having jurisdiction

Ensure the home is secured properly

Prevent injury

Minimize exposure to health and safety hazards

3957

2.0201.1 Combustion Appliance Zone (CAZ) Testing

Topic: 
Combustion Safety
Subtopic: 
Combustion Safety General
Desired Outcome: 
Accurate information about appliance safe operation is gathered
For supporting material, see Calculation of the Infiltration Credit, Referenced Standards and Building America Solution Center.

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0201.1a
Assessment

Emergency problems (e.g., ambient gas levels greater than 10% Lower Explosion Limit (LEL), ambient CO levels that exceed 70 ppm) will be communicated clearly and immediately to the customer, the home shall be evacuated, and appropriate personnel (e.g.: HVAC technician, utility, emergency services) shall be contacted. ;            

Significant problems (e.g., gas leak less than 10% LEL, ambient CO levels that exceed 35 ppm but less than 70 ppm) will be communicated clearly and immediately to the customer and appropriate solutions will be suggested 

Examine appliance for signs of damage, misuse, improper repairs, and lack of maintenance 
 

Ensure system does not have potentially fatal problems 

1739
2.0201.1b
Fuel leak detection

Inspect and test for gas or oil leakage at connections of natural gas, propane piping, or oil systems

If leaks are found, immediate action will be taken to notify occupant to help ensure leaks are repaired

The report will specify repair for leaks and replacement for hazardous or damaged gas or oil connectors and pipes

Detect fuel gas leaks

Determine and report need for repair

1740
2.0201.1c
Venting

For oil systems that require a draft regulator, the presence and operability of it (that draft regulator) will be verified and tested

Combustion venting systems will be inspected for damage, leaks, disconnections, inadequate slope, and other safety hazards

Determine if a regulator is present and working

Determine whether vent system is in good condition and installed properly

1741
2.0201.1d
Base pressure test

Baseline pressure for naturally drafting vented appliances will be measured in Combustion Appliance Zone with reference to outdoors

Measure pressure difference between combustion zone and the outside under natural conditions

1742
2.0201.1e
Depressurization test

CAZ depressurization testing will be administered for all atmospherically vented appliances located inside the pressure boundary.  

Depressurization test will include exhaust fans, interior door closure, or duct leakage, or a combination thereof; the test will be done to determine the largest negative pressure per BPI Standard 1200.

Determine worst-case depressurization in combustion zone due mechanical system fans

1743

2.0201.2 Combustion Safety - Make-up Air

Topic: 
Combustion Safety
Subtopic: 
Combustion Safety General
Desired Outcome: 
Buildup of dangerous combustion byproducts in the living space prevented
Note: 
The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
For supporting material, see Calculation of the Infiltration Credit, Referenced Standards and Building America Solution Center.

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0201.2a
Outside combustion make-up air

Where applicable, combustion air will be provided from the outside and installed in accordance with the IRC for the type of appliance installed

Prevent combustion byproducts from entering the house

1747
2.0201.2b
New appliances
If replacing appliances, a sealed-combustion, direct-vent appliance will be installed if possible. New appliances will be installed in accordance with manufacturer specifications, the IRC and additional applicable codes

Prevent combustion byproducts from entering the house

1748
2.0201.2d
Gas ovens


Gas ovens will be tested for CO 

A clean and tune will be conducted if measured CO in the undiluted flue gases of the oven vent at steady state exceeds 225 ppm as measured 
 

Ensure clean burn of gas ovens

1750
2.0201.2e
Gas range burners

Specify clean and tune if the flame has any discoloration, flame impingement, an irregular pattern, or if burners are visibly dirty, corroded, or bent

Ensure clean burn and operation of gas range burners

1751
2.0201.2f
Solid fuel burning appliances

If the solid fuel burning appliance is the primary heat source and has signs of structural failure replace solid fuel burning appliance with UL-listed and EPA - certified appliances if the existing appliance is not UL-listed

Ensure safe operations of solid fuel burning appliances

1752

2.0201.3 Vented Combustion Appliance Safety Testing

Topic: 
Combustion Safety
Subtopic: 
Combustion Safety General
Desired Outcome: 
Accurate information about appliance safe operation is gathered

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0201.3a
Spillage Test

In conditions with largest negative pressure as determined from Detail 2.0201.1e:

If spillage in a combustion appliance with a warm vent exceeds two minutes during pressure testing, specify measures to mitigate

If spillage in a combustion appliance with a cold vent exceeds five minutes during pressure testing, specify measures to mitigate

Detect excessive spillage of combustion gases

3974
2.0201.3b
Carbon monoxide (CO) test in appliance vent

CO will be tested for in undiluted flue gases of combustion appliances

In conditions with largest negative pressure as determined from Detail 2.0201.1e:

If CO levels exceed 400 ppm air-free measurement in furnaces, service will be provided to reduce CO to below these levels (unless CO measurement is within manufacturer specifications)

If CO levels exceed 200 ppm air-free measurement in water heaters or room heaters, service will be provided to reduce CO to below these levels (unless CO measurement is within manufacturer specifications)

Measure CO and report excessive levels

3975
2.0201.3c
Final test out

Final combustion testing will be conducted at project completion to ensure compliance with the above specifications

Ensure safe operation of combustion appliance within the whole house system after any repair project

3976

2.0202.1 Unvented Space Heaters: Propane, Natural Gas, and Kerosene Heaters

Topic: 
Combustion Safety
Subtopic: 
Unvented Space Heaters
Desired Outcome: 
Elimination of combustion byproducts
For supporting material, see Calculation of the Infiltration Credit, Referenced Standards and Building America Solution Center.

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0202.1a
Removal

With the occupant's permission, unvented heaters will be removed, except when used as a secondary heat source and when it can be confirmed that the unit is listed to ANSI Z21.11.2

Units that are not being operated in compliance with ANSI Z21.11.2 should be removed before the retrofit but may remain until a replacement heating system is in place

Failure to remove unvented space heaters serving as primary heat sources has the potential to create hazardous conditions, and thus any further weatherization services will be reevaluated in the context of potential indoor air quality risks

Eliminate sources of combustion byproduct within a living space

3982
2.0202.1b
Occupant education

Occupant will be educated on potential hazards of unvented combustion appliances (primary or secondary) within a living space

Inform occupant about possible hazards associated with combustion byproducts and moisture

3983

2.0203.1 Combustion Air for Natural Draft Appliances

Topic: 
Combustion Safety
Subtopic: 
Vented Gas Appliances
Desired Outcome: 
Sufficient air provided in the Combustion Appliance Zone ( CAZ CAZ Combustion appliance zone )
For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0203.1a
Required combustion air

The required volume of indoor air will be determined in accordance with IRC and authority having jurisdiction, except that where the air infiltration rate is known to be less than 0.40 air changes per hour (ACH), IRC will be used

Exception: Existing appliances that have passed combustion safety testing per BPI 1200 are deemed to have sufficient combustion air

Determine if existing conditions meet the combustion air calculation

1755
2.0203.1b
Additional combustion air (if action is required)

Additional combustion air will be provided in accordance with IRC and authority having jurisdiction when necessary to solve spillage problems 

Ensure adequate combustion air for operation of the appliance

1756
2.0203.1c
Spillage testing

If spillage in a combustion appliance with a warm vent exceeds two minutes during pressure testing, specify measures to mitigate

If spillage in a combustion appliance with a cold vent exceeds five minutes during pressure testing, specify measures to mitigate

Detect excessive spillage of combustion gases

6968

2.0203.2 Combustion Flue Gas—Orphaned Water Heaters

Topic: 
Combustion Safety
Subtopic: 
Vented Gas Appliances
Desired Outcome: 
Flue gasses successfully removed from the house
For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0203.2a
Spillage testing

If spillage in a combustion appliance with a warm vent exceeds two minutes during pressure testing, specify measures to mitigate 

If spillage in a combustion appliance with a cold vent exceeds five minutes during pressure testing, specify measures to mitigate 

Detect excessive spillage of combustion gases 

1757
2.0203.2b
Flue gas removal (chimney liner or approved methods)

A chimney liner will be installed in accordance with the IRC or applicable NFPA standard

Allow water heater to vent properly

Prevent damage to the chimney

1758
2.0203.2c
Retesting spillage

If a combustion appliance spillage exceeds two minutes during pressure testing, specify measures to mitigate

Ensure appliance is not spilling longer than two minutes with a warm vent

1759
2.0203.2d
Required combustion air

The minimum required volume will be 50 cubic feet per 1,000 Btu /h in accordance with IRC and authority having jurisdiction.

Exception: Existing appliances that have passed combustion safety testing per BPI 1200 are deemed to have sufficient combustion air.

Determine if existing conditions meet the combustion air calculation

1760
2.0203.2e
Additional combustion air (if action is required)

Additional combustion air will be provided in accordance with IRC or other authority having jurisdiction

Ensure adequate combustion air for operation of the appliance

1761

2.0203.4 Occupant Education

Topic: 
Combustion Safety
Subtopic: 
Vented Gas Appliances
Desired Outcome: 
Ensure persistence of resident safety

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0203.4a
Occupant health and safety

All homes will have a functioning CO alarm

If CO levels in interior living spaces exceed outdoor levels, potential sources will be investigated and appropriate action taken to reduce them (e.g., have a qualified professional tune, repair, or replace improperly operating combustion appliances; apply weather stripping or conduct air sealing between the garage or crawl space and the home)

Ensure occupant health and safety

Ensure indoor CO levels do not exceed outdoor CO levels

3989
2.0203.4b
Occupant education

Occupants will be educated on the operation and maintenance of the CO alarm

Completed work on combustion appliances and recommended maintenance will be reviewed with occupant

Occupant will be provided information regarding the health effects and risk of high CO concentrations; EPA provides possible expanded actions and offers client education information in an appendix to the protocols

Ensure occupant can operate and maintain installations

Inform occupant regarding possible CO hazards

3990

2.0204.1 Isolating Combustion Water Heater Closet

Topic: 
Combustion Safety
Subtopic: 
Isolation
Desired Outcome: 
Isolate combustion water heater closet from conditioned space

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0204.1a
Work assessment

Installer prework assessment will be conducted to determine:

  • Combustion safety
  • Proper venting
  • Structural integrity
  • Roof leaks
  • Insect infestation
  • Accessibility
  • Number, type, size, and location of penetrations

Ensure combustion appliance is functioning safely

Ensure work space is safe and ready for air sealing

Verify scope of work

4000
2.0204.1b
Air seal closet

When the water heater closet contains a heater that is not sealed combustion or power vented, the closet will be isolated/separated from the rest of the home through air sealing with fire-rated materials, if feasible

Avoiding frozen pipes must be considered without creating an additional utility burden (e.g., heat tape)

Prevent combustion gases from entering living area and minimize extension of interior pressures caused by exhaust fan, dryers, and interior door closure into the water heater closet

4001
2.0204.1c
Materials

Only noncombustible materials will be used in contact with chimneys, vents, and flues

Prevent a fire hazard

4002
2.0204.1d
Post-work testing/verification

Blower door assisted zonal pressure diagnostics will be used to verify isolation has been achieved

Prevent combustion gases from entering living area

4003

2.0301.1 Smoke Alarm

Topic: 
Safety Devices
Subtopic: 
Combustion Safety Devices
Desired Outcome: 
Properly installed smoke alarms
Note: 
The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0301.1a
Smoke alarm (hardwired)

When installing hardwired smoke alarms, it will be listed and labeled in accordance with UL 217  and installed in accordance with the IRC or as required by the authority having jurisdiction 

Ensure proper installation

4013
2.0301.1b
Smoke alarm (battery operated)

When installing battery operated smoke alarms, it will be installed in accordance with manufacturer specifications 

Ensure proper installation

4014

2.0301.2 Carbon Monoxide Alarm or Monitor

Topic: 
Safety Devices
Subtopic: 
Combustion Safety Devices
Desired Outcome: 
Properly installed CO CO Carbon monoxide alarms or monitors
Note: 
The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
For supporting material, see Calculation of the Infiltration Credit, Referenced Standards and Building America Solution Center.

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0301.2a
CO detection and warning equipment (hardwired)

Hardwired CO detection or warning equipment will be installed in accordance with the ASHRAE 62.2 or as required by the authority having jurisdiction

Installation will be accomplished by a licensed electrician when required by the authority having jurisdiction

Ensure proper installation

4015
2.0301.2b
CO detection and warning equipment (battery operated)

Battery-operated CO detection or warning equipment will be installed in accordance with the ASHRAE 62.2 and manufacturer specifications as required by the authority having jurisdiction

Ensure proper installation

4016

2.0401.1 Air Sealing Moisture Precautions

Topic: 
Moisture
Subtopic: 
Air Sealing
Desired Outcome: 
Ensure durability of repairs and reduce potential for occupant exposure to mold and other moisture-related hazards
For supporting material, see Calculation of the Infiltration Credit, Referenced Standards and Building America Solution Center.

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0401.1a
Moisture precautions for attics

Roof leaks will be repaired before performing attic air sealing or insulation

Moisture sources in the house that can generate moisture into the attic will be identified and removed or reduced

Where possible, water resistant sealants and/or closed cell foams will be used in cold climates.

Plastic, foil, or any other Class 1 vapor barrier  will not be used in hot humid climates

In marine climates, vapor permeable materials will be used to block and seal penetrations in attic
 

Ensure durability of repairs

Reduce potential for occupant exposure to mold and other moisture-related hazards

Prevent moisture from communicating from within the conditioned space into unconditioned attic space.

Increase durability of seal

Avoid moisture-related damage to the home
 

1782
2.0401.1b
Moisture precautions for crawl spaces

Exposed earth will be covered with a continuous, durable, sealed Class 1 vapor retarder a minimum of 6 mils in thickness 

Any vapor retarder shall not encapsulate wood building materials or spray foam

Holes between the crawl space and the living space will be sealed 

Ensure durability of repairs

Reduce potential for occupant exposure to mold and other moisture-related hazards

1783
2.0401.1c
Moisture precautions for the living space

Moisture sources in the home will be identified and removed or reduced

Local ventilation will be installed where appropriate (e.g., baths, kitchens) and vented to outside according to ASHRAE 62.2

Unvented combustion appliances that are not listed to ANSI Z21.11.2 will be removed

Ensure durability of repairs

Reduce potential for occupant exposure to mold and other moisture-related hazards

1784
2.0401.1d
Moisture precautions for exterior water

Before air sealing basement or crawl space walls near wet areas, surface water pooling near the foundation will be addressed by:

  • Repairing, modifying or replacing gutters and downspouts
  • Grading and subsurface drainage at critical locations (e.g., localized drain and grading beneath valleys) in accordance with Environmental Protection Agency (EPA) Indoor airPLUS Construction Specifications Section 1.1
  • Possible mitigation by waterproofing or installing draining plane with construction adhesive

Reduce potential for occupant exposure to mold and other moisture-related hazards

1785

2.0402.1 Drainage

Topic: 
Moisture
Subtopic: 
Drainage
For supporting material, see Building America Solution Center.
Desired Outcome: 
Move water away from home

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0402.1a
Work assessment

Installer prework assessment will be conducted to determine:

  • Standing water
  • Positive grade/drainage
  • Conditions of gutter system
  • Vegetation/shrubbery
  • Settling of home
  • Leveling of home

Ensure no organic material is under the supports, including topsoil and roots

Verify scope of work

Ensure that work space is ready for work

4021
2.0402.1b
Corrective action

Ground will be properly graded to provide positive slope (1" per foot)away from home

Gutter and downspouts will be installed or repaired

Vegetation within 36" and encroaching on home will be cleared or trimmed if occupant approves

Home will be leveled to compensate for settling or improper installation

Ensure positive drainage

Maintain ventilation around home

4022
2.0402.1c
Occupant education

Occupant will be educated on the benefit of trees and shrubs to reduce heat gain and provide wind breaks in high wind locations

Occupant will be educated on the need to maintain positive drainage (e.g., gutters, down spouts, grading) and maintain ventilation

Maintain durability

Ensure water is moved down and away from home

4023

2.0403.4 Pier and Skirting Foundations—Ground Moisture Barriers

Topic: 
Moisture
Subtopic: 
Vapor Barriers
Desired Outcome: 
Durable, effective ground moisture barrier that provides ongoing access and minimizes ground vapor

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0403.4a
Coverage

If existing conditions of the ground and skirting mandates, a moisture barrier that covers the crawl space ground will be installed with allowances for structural supports (piers) and accessibility

Reduce ground moisture entering crawl space

4024
2.0403.4b
Material specification

A ground moisture barrier with a rating of no more than 0.1 perm will be used

A ground moisture barrier will be used that meets tear and puncture resistance standard ASTM E1745

Homeowner will be advised that all plastic is biodegradable and will have a life span much shorter than the home (5 years), and it will need replacing to remain effective

Ensure crawl space is accessible for service and maintenance without damaging the integrity of the ground moisture barrier

4025
2.0403.4c
Overlap seams

When seams exist, they will be overlapped a minimum of 12" using reverse or upslope lapping technique

Keep water under the liner

Reduce likelihood of damage at seams

4026
2.0403.4d
Fastening

Ground moisture barrier may be fastened to ground with durable fasteners

Prevent movement of the ground moisture barrier

4027

2.0404.1 Stand-Alone Dehumidifiers

Topic: 
Moisture
Subtopic: 
Space Conditioning
Desired Outcome: 
Energy used to control humidity in conditioned spaces reduced
For supporting material, see Referenced Standards and Calculation of the Infiltration Credit.

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0404.1a
Selection

Equipment will have a minimum efficiency level of ENERGY STAR® or better

Equipment will have a fan-off option

Equipment will retain settings after power-off

Equipment will have features that reduce both peak electric use (e.g., internal and external timers) and absolute energy use

Equipment will have standby losses of 1 watt or less

Controls will be labeled so they are understandable, readable, and accurate for occupant needs

Systems located in a basement or crawl space will be rated for cold temperature operation

Operating environment will be determined and appropriate equipment will be selected for that environment (e.g., low temperature and high relative humidity)

Reduce energy use

Provide durable equipment

Control moisture

Provide equipment appropriate for occupant use

4028
2.0404.1b
Installation

Installation will proceed only when the following applicable steps have been taken to control moisture:

  • Downspouts are redirected away from foundation
  • Moisture from drying clothes is vented to the outside
  • Sump pit is covered and sealed
  • Dirt in crawl space is covered with a vapor barrier
  • Plumbing leaks are eliminated

Equipment will be installed according to manufacturer specifications and meet all applicable codes

Equipment will be installed to permit adequate air flow

Equipment will have a timer for off-peak operation if time-of-use program is available and if the equipment can handle power interruptions

Any penetrations to the exterior of the home created by the installation of the appliance will be sealed

Initial relative humidity and temperature settings will be set by the installer to ensure the space does not reach dew point

Operation of controls and needed maintenance will be reviewed with occupant

A user guide for dehumidifier settings in different climate conditions will be created by the installer and provided to the occupant

Installer will commission the equipment to ensure it is functioning properly

An independent measurement will be made to verify relative humidity

System will be connected directly to condensate line that drains to a plumbing drain or the exterior, away from the home's foundation and in compliance with the plumbing code or the authority having jurisdiction

Specific information on the proper maintenance of the equipment will be provided to the occupant

Warranty information, operation manuals, and installer contact information will be provided to the occupant

Reduce or retire dehumidifiers

Reduce allergens and asthma triggers

Improve health and reduce irritants

Improve building durability

Improve comfort

Reduce pest populations

Reduce risk of mold issues

Educate occupant on how to operate and maintain equipment

4029
2.0404.1c
Decommissioning

Removed equipment will be recycled or disposed of properly in accordance with local regulations

Prevent the reuse of inefficient equipment and its components

Reduce waste

Protect the environment

4030

2.0404.2 Crawl Spaces—Preliminary Dehumidification

Topic: 
Moisture
Subtopic: 
Space Conditioning
Desired Outcome: 
A dry and moisture controlled space ensured
For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0404.2a
Close vents

Vents and other openings will be closed after ensuring sufficient combustion air for fuel burning appliances in accordance with IRC

Reduce moisture load coming from outside of the crawl space

4031
2.0404.2b
Drying

If liquid moisture is present, the area will be dried until any liquid moisture is eliminated

Reduce moisture in the crawl space

Improve work environment

4032
2.0404.2c
Drying time

Space will be dehumidified until wood moisture content in solid, untreated lumber is less than 20%

Reduce moisture content of wood

4033

2.0404.4 Basements—Dehumidification

Topic: 
Moisture
Subtopic: 
Space Conditioning
Desired Outcome: 
Basement humidity controlled with supplemental dehumidification
For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0404.4a
Dehumidifier

A permanent, low-temperature, auto-restart, minimum ENERGY STAR® rated dehumidifier will be installed

Manufacturer specifications will be followed for size and use

Condensate will be drained to daylight or a condensation pump

Maintain a dry basement

Reduce conditions conducive to mold growth, wood rot, and pests

1823
2.0404.4b
Dehumidification for divided spaces

Drying will be provided to all basement areas

Maintain a dry basement

Reduce conditions conducive to mold growth, wood rot, and pests

1824
2.0404.4c
Relative humidity

All basement spaces will be maintained at a relative humidity that ensures condensation will not occur on cool surfaces

Maintain a dry basement

Reduce conditions conducive to mold growth, wood rot, and pests

1825
2.0404.4d
Condensing surfaces(e.g., cold water pipes)

Condensing surfaces in basement will be insulated and sealed

Maintain a dry basement

Reduce conditions conducive to mold growth, wood rot, and pests

1826
2.0404.4e
Dehumidification (option for dry climates and heating- dominated climates seasonally)

Ventilation in the basement will be controlled to maintain relative humidity that ensures condensation will not occur on cool surfaces

Maintain a dry basement

Reduce conditions conducive to mold growth, wood rot, and pests

1827
2.0404.4f
Occupant education

Occupant will be educated on how and when to change filter and clean condensate drain of the dehumidifier in accordance with manufacturer specifications

Ensure occupant health

Preserve integrity of system

1828

2.0501.2 Pier and Skirting Foundation—Venting

Topic: 
Radon
Subtopic: 
Air Sealing
Desired Outcome: 
Pollutants are effectively vented

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0501.2a
Venting

Pier and skirting foundations will be vented in accordance with local climate conditions or code as required

Provide ventilation for pollutant sources (e.g., moisture, radon, soil gases)

4040
2.0501.2b
Occupant education

Occupants will be educated on purpose, operation, and maintenance of vents

Ensure vents function as intended

4041

2.0602.1 Static Electric Shock

Topic: 
Electrical
Subtopic: 
Electric Hazards
Desired Outcome: 
Prevention of static electric shock to the insulation installer when using rigid tubing

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0602.1a
Rigid fill tube

Rigid fill tubes will be made of a material that will not hold an electric charge, such as Schedule 40 PVC Electrical Conduit, or be grounded

Prevent injury to the installer

4042
2.0602.1b
Metal coupler grounding

For an additional level of protection, the metal coupler on the hose will be connected to the grounding wire

Grounding wire will be connected to the grounding rod

Grounding rod will be driven into the ground a minimum of 8' when possible; grounding wire will be connected in compliance with local code and authority having jurisdiction

Divert static discharge of electricity to ground instead of installer

4043

2.0602.2 House Current Electric Hazard

Topic: 
Electrical
Subtopic: 
Electric Hazards
Desired Outcome: 
Prevention of injury to the installer and occupant, and prevent damage to the structure, if required by authority having jurisdiction
Note: 
The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0602.2a
Metal skin and frame grounding

Metal skin and frame will be grounded through the panel box to avoid electrical shock

Prevent injury to the installer

4044
2.0602.2b
Metal fill tube grounding

For an additional level of protection, metal fill tube will be connected to the grounding wire

Grounding wire will be connected to the copper grounding rod that is driven into the ground a minimum of 8' when possible and required by code or authority having jurisdiction

Divert house electric current to ground instead of installer in the event of contact with a live wire

4045
2.0602.2c
Electrical tool safety

An electrical safety assessment will be performed

All electric tools will be protected by ground-fault circuit interrupters (GFCI)

Three-wire type extension cords will be used with portable electric tools

Worn or frayed electric cords will not be used

Water sources (e.g., condensate pans) and electrical sources will be kept separate

Metal ladders will be avoided

Aluminum foil products will be kept away from live wires

For arc flash hazards, NFPA 70E will be consulted

Avoid electrical shock and arc flash hazards

4046
2.0602.2d
Aluminum wiring

If aluminum wiring is present, work on the home will be stopped until the suspect wiring is inspected and determined to be safe by a licensed electrician

After energy retrofit is completed, wiring will be reinspected by a licensed electrician

Prevent injury to installer and occupant

Prevent damage to structure

4047

2.0702.1 Warranty and Service Agreement

Topic: 
Occupant Education and Access
Subtopic: 
Installed Equipment
Desired Outcome: 
Occupants provided recourse for failures in materials, workmanship, and serviceability and informed of potential hazards

Manufactured Housing

TitleSpecification(s)Objective(s)
2.0702.1a
Warranty

A minimum 1-year warranty for materials, workmanship, and serviceability will be provided to occupants upon completion of work

Provide recourse to occupants for failures in materials, workmanship, and serviceability

1843
2.0702.1b
Warranty and Maintenance Agreement - Client Education

Provide occupants with manufacturers' warranties on installed equipment and inform of installer maintenance agreement options

Share information on company related annual inspections and maintenance agreements as well as manufacturer related warranty details

Ensure occupants are aware of warranty and maintenance agreement options

1844
2.0702.1c
General conditions

At a minimum, the following concerns and warnings will be addressed within the warranty, as applicable to the work being warrantied:

  • Possible drying and shrinking effects
  • Storage of hazardous and flammable materials
  • Mold

Educate occupants on potential hazards

1845

Section 3:Air Sealing

3.1001.4 General Penetrations (Electrical, HVAC, Plumbing, Vent Termination, Recessed Lighting)

Topic: 
Attics
Subtopic: 
Penetrations and Chases
Desired Outcome: 
Penetrations sealed to prevent air leakage and moisture movement between unconditioned and conditioned space

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1001.4a
Work assessment

Installer prework assessment will be conducted to determine:

  • Structural integrity
  • Roof leaks
  • Insect infestation
  • Accessibility
  • Number, type, size, and location of penetrations

Ensure work space is safe and ready for air sealing

Verify scope of work

4048
3.1001.4b
Air sealing penetrations

Backing or infill will be provided as needed to meet the specific characteristics of the selected material and the characteristics of the penetration or hole

The infill or backing will not bend, sag, or move once installed

All accessible damaged vapor barrier will be repaired

Penetration through the air barrier will be repaired

Ensure closure is permanent and supports any load (e.g., wind, insulation, mechanical pressures)

Ensure sealant is effective and durable

4049
3.1001.4c
Sealant selection

Sealants will be used to fill holes no larger than recommended by manufacturer specifications

Sealants will be compatible with all adjoining surfaces

Sealants will be continuous and meet fire barrier specifications, according to authority having jurisdiction

Create a permanent seal

Ensure sealant meets or exceeds the performance characteristics of the surrounding materials

Create a continuous seal

4050
3.1001.4d
Ceiling hole repair

Ceiling repair material must meet or exceed strength of existing ceiling material

Ceiling repair must span from truss to truss or add blocking as needed for support

The backing or infill will not bend, sag, or move once installed

All accessible damaged vapor barriers will be repaired

Penetrations through the air barrier must be repaired

Ensure ceiling is structurally sound

Minimize air leakage

Ensure closure is permanent and supports expected wind and mechanical pressure loads

Ensure sealant does not fall out

4051
3.1001.4e
Materials

Materials will be used or installed in accordance with product manufacturer specifications

Select materials to ensure durable and permanent repair

4052
3.1001.4f
High temperature application

Only noncombustible materials will be used in contact with chimneys, vents, and flues

Local codes will be referenced

Prevent a fire hazard

4053

3.1101.1 Exterior Holes and Penetrations

Topic: 
Walls
Subtopic: 
Manufactured Housing Walls
Desired Outcome: 
Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs will maintain structural integrity

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1101.1a
Work assessment

Installer prework assessment will be conducted to determine:

  • Structural integrity
  • Size of wall stud
  • Insect infestation
  • Accessibility
  • Number, type, size, and location of penetrations

Ensure work space is safe and ready for air sealing

Verify scope of work

4054
3.1101.1b
Materials

Like material and/or compatible materials will be used for repairs

Materials will be selected to comply with manufactured housing rules and regulations (e.g., Manufactured Housing Institute)

Select materials to ensure durable and permanent repair

4055
3.1101.1c
Exterior wall air sealing

All holes and penetrations on exterior surface of exterior walls will be sealed to ensure resistance to outdoor elements

Intentionally ventilated walls will not be sealed at vent locations (e.g., weep holes)

All holes and penetrations on the interior surface of exterior walls will be repaired

Backing or infill will be provided as needed to meet the specific characteristics of the selected sealant and the characteristics of the penetration

Minimize air leakage

Maintain durability

Ensure resulting closure is permanent and supports expected load

Ensure sealant is effective and durable

4056

3.1101.2 Interior Holes and Penetrations

Topic: 
Walls
Subtopic: 
Manufactured Housing Walls
Desired Outcome: 
Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs will maintain structural integrity

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1101.2a
Work assessment

Installer prework assessment will be conducted to determine:

  • Structural integrity
  • Size of wall stud
  • Insect infestation
  • Accessibility
  • Number, type, size, and location of penetrations

Ensure work space is safe and ready for air sealing

Verify scope of work

4057
3.1101.2b
Interior wall air sealing

All accessible holes and penetrations in top and bottom plates will be sealed

Backing or infill will be provided as needed to meet the specific characteristics of the selected sealant and the characteristics of the penetration

Minimize air leakage

Maintain durability

Ensure resulting closure is permanent and supports expected wind and mechanical pressure loads

Ensure sealant is effective and durable

4058
3.1101.2c
Materials

Like material and/or compatible materials will be used for repairs

Materials will be selected to comply with manufactured housing rules and regulations (e.g., Manufactured Housing Institute)

Select materials to ensure durable and permanent repair

4059

3.1101.3 Holes, Penetrations, and Marriage Line

Topic: 
Walls
Subtopic: 
Manufactured Housing Walls
Desired Outcome: 
Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs to maintain structural integrity

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1101.3a
Work assessment

Installer prework assessment will be conducted to determine:

  • Structural integrity
  • Insect infestation
  • Accessibility
  • Number, type, size, and location of penetrations
  • Identify marriage walls and lines

Ensure work space is safe and ready for air sealing

Verify scope of work

4060
3.1101.3b
Marriage wall air sealing of holes and penetrations

All accessible holes and penetrations in top and bottom plates will be sealed

Backing or infill will be provided as needed to meet the specific characteristics of the selected sealant and the characteristics of the penetration

Minimize air leakage

Maintain durability

Ensure resulting closure is permanent and supports expected wind and mechanical pressure loads

Ensure sealant is effective and durable

4061
3.1101.3c
Marriage line air sealing

All accessible holes and penetrations at marriage lines will be sealed continuously at end walls, floors, and ceiling

Backing or infill will be provided at the marriage line as needed

All remaining gaps will be sealed with an approved material

Minimize air leakage

Maintain durability

Ensure sealant is effective and durable

4062
3.1101.3d
Materials

Materials will be used or installed in accordance with product manufacturer specifications

Select materials to ensure durable and permanent repair

4063

3.1201.5 Manufactured Housing Windows and Doors

Topic: 
Windows and Doors
Subtopic: 
Maintenance, Repair, and Sealing
For supporting material, see Building America Solution Center.
Desired Outcome: 
Windows and doors are operable, sealed, and weathertight

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1201.5a
Work assessment

Installer prework assessment will be conducted to determine:

  • Number
  • Type
  • Operating condition
  • Wall construction

Ensure work space is safe and ready for air sealing

Verify scope of work

4064
3.1201.5b
Lead paint assessment

Presence of lead-based paint in pre-1978 homes will be assumed unless testing confirms otherwise; documentation of testing results will be kept on file

EPA's Renovation, Repair and Painting (RRP) Program Rule (40 CFR Part 745) in pre-1978 homes and proposed changes to this rule (Federal Register/Vol. 75, No. 87/May 6, 2010) will be complied with, to be superseded by any subsequent final rulemaking or any more stringent state or federal standards

Protect worker and occupant from potential lead hazards

4065
3.1201.5c
Operable windows and doors

All egress windows will be operable as required by local codes

All egress doors will be operable as required by local codes

Maintain operability of egress windows and doors

4066
3.1201.5d
Air infiltration

Details that reduce air infiltration will be repaired, replaced, sealed, or installed (e.g., plastic gliders, weatherstripping, cranks, latches, locks, knobs, thresholds)

Reduce air infiltration

4067
3.1201.5e
Water infiltration

Details that reduce water infiltration will be repaired, replaced, or installed (e.g., replace missing glazing on sash, exterior caulking, exterior storm windows, storm doors, drip cap, J-channel, flashing)

Reduce water infiltration

4068
3.1201.5f
Materials

Materials will be used or installed in accordance with product manufacturer specifications

Select materials to ensure durable and permanent repair

4069
3.1201.5g
Quality assurance

Windows and doors will be adjusted to properly fit the jamb and allow for ease of operation and security

Ensure proper operation of the window, door, and hardware

Ensure air and watertight installation

4070
3.1201.5h
Occupant education and maintenance

Occupants will be notified of changes or repairs made and will be educated on how to operate and maintain windows and doors

Ensure long-term weathertightness

4071

3.1201.6 Interior Storm Windows

Topic: 
Windows and Doors
Subtopic: 
Maintenance, Repair, and Sealing
For supporting material, see Building America Solution Center.
Desired Outcome: 
Minimize air infiltration Infiltration The uncontrolled passage of outside air into a building through unintended leaks in the building envelope through existing leaky windows while maintaining safe egress for occupants

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1201.6a
Work assessment

Installer prework assessment will be conducted to determine:

  • Number
  • Type
  • Size
  • Condition of opening

Verify scope of work

4072
3.1201.6b
Fixed storm window

Fixed interior storm windows will not be installed in egress locations

Safety

4073
3.1201.6c
Installing operable storm window

Operable interior storm windows will be installed in accordance with manufacturer specifications

Minimize air leakage

Provide safe egress for occupants

4074
3.1201.6d
Health and safety

Interior storm windows will be operable and egress rated in egress locations

Provide safe egress for occupants

4075
3.1201.6e
Occupant education

Occupants will be educated on the proper use and maintenance of storm windows

Ensure weathertightness and safety

4076

3.1202.3 Replacing Damaged Window Glass in Manufactured Housing

Topic: 
Windows and Doors
Subtopic: 
Repairing/Replacing Cracked and Broken Glass
Desired Outcome: 
Glass complete and intact

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1202.3a
Work assessment

Installer prework assessment will be conducted to determine:

  • Number
  • Type
  • Location
  • Operating condition
  • Wall construction
  • Size

Ensure that work space is safe and ready for glass replacement

Verify scope of work

4077
3.1202.3b
Lead paint assessment

Presence of lead-based paint in pre-1978 homes will be assumed unless testing confirms otherwise; documentation of testing results will be kept on file

EPA's Renovation, Repair and Painting (RRP) Program Rule (40 CFR Part 745) in pre-1978 homes and proposed changes to this rule (Federal Register/Vol. 75, No. 87/May 6, 2010) will be complied with, to be superseded by any subsequent final rulemaking or any more stringent state or federal standards

Protect worker and occupant from potential lead hazards

4078
3.1202.3c
Broken glass removal

Damaged glass will be removed

Safely remove old glass

4079
3.1202.3d
Opening preparation

Opening will be cleaned

Original sealant/material will be removed

Prepare opening for new glass

4080
3.1202.3e
New glass installation

Replacement glass will be sized to original width, height, and depth

Stops will be replaced or installed

Glass will be sealed in accordance with original installation design

Glass will be selected with comparable tint and coating (color and look)

Tempered or safety glass will be used as required by local code

Install, seal, and secure new glass in place

4081

3.1203.3 Replacement of Manufactured Housing Windows and Doors

Topic: 
Windows and Doors
Subtopic: 
Replacement
Desired Outcome: 
Smooth operation and an airtight and weathertight fit of replacement windows and doors

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1203.3a
Work assessment

Installer prework assessment will be conducted to determine:

  • Number
  • Type
  • Operating condition
  • Wall construction

Ensure work space is safe and ready for air sealing

Verify scope of work

4082
3.1203.3b
Lead paint assessment

Presence of lead-based paint in pre-1978 homes will be assumed unless testing confirms otherwise; documentation of testing results will be kept on file

EPA's Renovation, Repair and Painting (RRP) Program Rule (40 CFR Part 745) in pre-1978 homes and proposed changes to this rule (Federal Register/Vol. 75, No. 87/May 6, 2010) will be complied with, to be superseded by any subsequent final rulemaking or any more stringent state or federal standards

Protect worker and occupant from potential lead hazards

4083
3.1203.3c
Window or door selection

Window or door units will be designed for manufactured home use and will be ENERGY STAR qualified

Rough opening will be measured before ordering replacements

Access to emergency egress points, such as primary windows or exit doors, will be considered during the selection of retrofit window or door units

Ensure proper size, type, and operation of window or door

4084
3.1203.3d
Rough opening preparation

Existing units will be removed

Opening will be cleaned

Any damaged framing will be replaced

Opening for installation will be prepared in accordance with manufacturer specifications

Provide a clean opening for replacement unit

4085
3.1203.3e
Window and door installation

Window or door units will be installed in accordance with manufacturer specifications

Ensure replacement window or door operates properly

Ensure replacement window or door has a weathertight fit

4086
3.1203.3f
Safety

Egress windows will only be replaced with egress windows

Provide safe egress for occupants

4087
3.1203.3g
Maintenance and occupant education

Occupants will be notified of changes or repairs made and will be educated on how to operate and maintain window or door

Ensure long-term weathertightness

4088

3.1301.1 Electrical, HVAC, Plumbing, Gas, Dryer Vent, and General Penetrations Through Bottom Board

Topic: 
Floors
Subtopic: 
Penetrations
Desired Outcome: 
Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1301.1a
Work assessment

Installer prework assessment will be conducted to determine:

  • Structural integrity
  • Standing water
  • Raw sewage
  • Insect infestation
  • Pests
  • Accessibility
  • Number, type, size, and location of penetrations

Ensure work space is safe and ready for air sealing

Verify scope of work

4089
3.1301.1b
Soft bottom board repair

Patching material will be provided as needed to meet the specific characteristics of the bottom board material and the characteristics of the hole

Patch will have a service life of a minimum of 20 years

Minimize air leakage

Keep insulation in place

Ensure repair materials are compatible

Ensure patch will support insulation

4090
3.1301.1c
Hard bottom board repair

Patching will be provided as needed to meet both the specific characteristics of the bottom board material and the characteristics of the hole

Patch will not bend, sag, or move once installed

Patch will be permanent

Minimize air leakage

Ensure repair materials are compatible

Minimize hole size to ensure successful use of sealant

Ensure closure is permanent and supports insulation

Ensure sealant does not fall out

4091
3.1301.1d
Bottom board penetrations

Combustion air supplies will be labeled for identification and will not be blocked or sealed

Penetrations will be sealed to meet both the specific characteristics of the bottom board material and the characteristics (hole size and type) of the penetrations (e.g., electrical, PVC, gas line, dryer vent)

The patch will not bend, sag, or move once installed

Ensure combustion equipment is not compromised

Minimize air leakage around penetrations

4092
3.1301.1e
Materials

Materials will be selected to comply with manufactured housing rules and regulations (e.g., Manufactured Housing Institute)

Surface preparation and material selected will be used or installed in accordance with product manufacturer specifications

Select materials to ensure durable and permanent repair

4093

3.1301.2 Electrical, HVAC, Plumbing, Gas, Dryer Vent, and General Penetrations Through Flooring

Topic: 
Floors
Subtopic: 
Penetrations
Desired Outcome: 
Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs will maintain structural integrity

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1301.2a
Work assessment

Installer prework assessment will be conducted to determine:

  • Structural integrity
  • Insect infestation
  • Pests
  • Accessibility
  • Plumbing leaks
  • Number, type, size, and location of penetrations

Ensure work space is safe and ready for air sealing

Verify scope of work

4094
3.1301.2b
Floor air sealing (decking, subfloor, floor decking)

Backing or infill will be provided as needed to meet the specific characteristics of the selected sealant and the characteristics of the penetration

The backing or infill will not bend, sag, or move once installed

Ensure resulting closure is permanent and supports expected load

Ensure sealant is effective and durable

4095
3.1301.2c
Sealant selection

Sealants will be used to fill holes no larger than recommended by manufacturer specifications

Sealants will be compatible with all adjoining surfaces

Sealants will be continuous and meet fire barrier specifications, if required

Ensure sealant meets or exceeds the performance characteristics of the surrounding materials

4096
3.1301.2d
Floor repair

Floor repair material will meet or exceed strength of existing floor material

Repair will span from joist to joist and blocking added as needed to support floor

Patches smaller than 144 square inches will not require repairs from joist to joist

Floor repair material will be glued, fastened, and air sealed

Ensure floor is structurally sound

Minimize air leakage

4097
3.1301.2e
Structural materials

Materials will be selected to comply with manufactured housing rules and regulations (e.g., Manufactured Housing Institute)

Materials will be used or installed in accordance with manufacturer specifications

Select materials to ensure durable and permanent repair

4098
3.1301.2f
High temperature application

Only noncombustible materials will be used in contact with chimneys, combustion exhaust vents, and flues

Prevent a fire hazard

4099

3.1302.1 Floor Framing—Bay Window

Topic: 
Floors
Subtopic: 
Floor Framing
Desired Outcome: 
Floor/framing around bay windows sealed and weathertight

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1302.1a
Work assessment

Installer prework assessment will be conducted to determine:

  • Accessibility
  • Number
  • Type
  • Size
  • Operating condition
  • Condition of opening
  • Wall construction type

Ensure work space is safe and ready for air sealing

Verify scope of work

4100
3.1302.1b
Lead paint assessment

Presence of lead-based paint in pre-1978 homes will be assumed unless testing confirms otherwise; documentation of testing results will be kept on file

EPA's Renovation, Repair and Painting (RRP) Program Rule (40 CFR Part 745) in pre-1978 homes and proposed changes to this rule (Federal Register/Vol. 75, No. 87/May 6, 2010) will be complied with, to be superseded by any subsequent final rulemaking or any more stringent state or federal standards

Protect worker and occupant from potential lead hazards

4101
3.1302.1c
Air infiltration

Details that reduce air infiltration will be repaired, replaced, sealed, or installed

Bay window floor framing that connects interior to exterior underpinning and insulation must be removed to seal gaps, cracks, and joints

Blocking must be installed on perimeter rail (rim joist) if missing

Seal all gaps, cracks, and joints of all framing in bay window assembly

Insulation must be replaced or installed in full contact with subfloor

Underpinning will be replaced and sealed

Reduce air infiltration

4102
3.1302.1d
Water infiltration

Details that reduce water infiltration will be repaired, replaced, or installed

Reduce water infiltration

4103
3.1302.1e
Materials

Materials will be used or installed in accordance with product manufacturer specifications

Ensure proper use and installation of materials

4104

3.1488.2 Skirting Manufactured Homes

Topic: 
Basements and Crawl Spaces
Subtopic: 
Special Considerations
Desired Outcome: 
Wind, weather, debris, and pests are excluded from the underside of the home

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1488.2a
Work assessment

Installer prework assessment will be conducted to determine:

  • Type (ventilated or unventilated, insulated or noninsulated)
  • Extent of repair/replacement
  • Accessibility
  • Moisture and drainage
  • Structural integrity of foundation (e.g., piers and supports)
  • Structural integrity of perimeter rail/rim joist
  • Integrity of existing skirting support material
  • Presence of infestation or pests

Problems will be corrected before skirting work begins

Ensure work space is safe and ready for repair or installation

Verify scope of work

4105
3.1488.2b
Repair and installation

Manufacturer specifications will be followed when applicable

No exposed wood will be left unfinished (e.g., wood to be painted, sealed, treated)

If framing is required for skirting, framing will be structurally sound

Skirting will be installed to allow for movement (e.g., no screws or nails directly through panels)

Skirting installation will allow for expansion, contraction, and frost heaving

Match existing skirting

Provide resistance from outdoor elements

Limit pest access

4106
3.1488.2c
Venting

Venting will be in accordance with local climate conditions or code as required

Achieve and maintain building durability

4107
3.1488.2d
Insulated skirting

Insulated skirting may be installed where belly is inaccessible and not repairable

Reduce conductive heat loss through floor assembly

4108
3.1488.2e
Flashing

Flashing or proper caulking will be installed between skirting and manufactured home, if required by authority having jurisdiction

Prevent water penetration

4109
3.1488.2f
Materials

Like material and/or compatible materials will be used for repairs (e.g., galvanized metal, aluminum, alkaline copper quaternary treated lumber)

Selected materials will be corrosion resistant

Achieve/increase durability

4110
3.1488.2g
Fasteners

Like material and/or compatible materials will be used for repairs (e.g., galvanized metal, aluminum, alkaline copper quaternary treated lumber)

Fasteners will be corrosion resistant

Achieve/increase durability

4111
3.1488.2h
Structural

Existing skirting support material will be structurally sound and completely intact; any damaged framing will be replaced

Provide adequate support

4112
3.1488.2i
Skirting stiffener/high wind support

Skirting support (e.g., vinyl blowout rods, horizontal bracing for other types) will be placed in high-wind locations

Increase strength to resist wind loading

4113
3.1488.2j
Occupant education

Occupants will be educated on maintenance of skirting (e.g., floating panels are not tightly screwed to framing, string trimmers may damage skirting)

Increase durability

4114

3.1601.2 Duct Preparation for SPF Application

Topic: 
Ducts
Subtopic: 
Duct Preparation
Desired Outcome: 
Condition of ductwork identified and necessary repairs made in preparation for spray polyurethane foam ( SPF SPF Spray polyurethane foam ) application
For supporting material, see Referenced Standards, General Information on Spray Polyurethane Foam (SPF), Calculation of the Infiltration Credit and Building America Solution Center.

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1601.2a
Inspection

All exposed ductwork in unconditioned spaces (e.g., attics, basements, crawl spaces) will be inspected

Broken joints or large cracks, gaps, or holes will be identified

Type of ductwork (e.g., metal, duct board, flex duct) will be identified

Type and R-value of existing duct insulation (e.g., fiberglass, stone wool, asbestos) will be identified as will the location of vapor retarders, if any

If asbestos insulation was used, it will not be disturbed; consult with an asbestos abatement expert for removal

Loose fitting or damaged fiberglass or stone wool insulation will be removed using proper safety equipment

Necessary clearances for installation of SPF will be ensured

Identify damaged ductwork in need of repair

Identify type and R-value of existing insulation

4115
3.1601.2b
Repair

Broken or missing ductwork will be repaired or replaced

All cracks, gaps, or holes greater than ¼" will be taped or sealed as feasible

Dust, dirt, and grease will be removed from exterior surfaces of ducts

Cover openings in ducts to prevent SPF from entering the interior of the duct

Ensure surfaces of duct are clean to promote proper adhesion of SPF

4116

3.1601.4 Support for Horizontal, Suspended Ducts

Topic: 
Ducts
Subtopic: 
Duct Preparation
Desired Outcome: 
Ducts and plenums properly supported

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1601.4a
Support (applies to all duct types)

Flexible and duct board ducts and plenums will be supported where feasible in accordance with flex duct manufacturer specifications and local codes

Support materials will be applied in a way that does not crimp ductwork or cause the interior dimensions of the ductwork to be less than specified (e.g., ceiling, framing, strapping)

Metal ducts will be supported by metal strapping, rods, or other materials, where feasible

Eliminate falling and sagging

4117

3.1601.5 Preparation and Mechanical Fastening

Topic: 
Ducts
Subtopic: 
Duct Preparation
Desired Outcome: 
Ducts and plenums properly fastened to prevent leakage

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1601.5a
Preparation

Surrounding insulation will be cleared to expose joints being sealed; salvage for reuse if possible

Duct surface to receive sealant will be cleaned

Gain access while maintaining insulation value

Achieve proper adhesion for airtight seal when needed to ensure a tight fit to the framing structure and ensure the register can be removed and reinstalled by the dwelling occupant

4118
3.1601.5b
Metal to metal

Ducts will be fastened with a minimum of three equally spaced screws

Ensure durable joints

4119
3.1601.5c
Flex to metal

Joints will be fastened with tie bands using a tie band tensioning tool

For oval flexible duct to metal connections, tie bands cannot be used; appropriate mechanical fastener will be used

All connections, regardless of fastener, will be sealed

Ensure durable joints

4120
3.1601.5d
Duct board to duct board

Joints will be fastened with outward clinching (stitch) staples and c-channels if possible

Ensure durable joints

4121
3.1601.5e
Duct board to flexible duct

Metal take-off collar specifically designed for the thickness of the duct board will be used

All finger tabs will be bent down securely

Finger tabs will be longer than the thickness of the duct board and the shank will not extend beyond the thickness of the duct board

There will be an internal metal backer inside the duct board through which three evenly spaced screws can be secured; the metal backer will not interfere with air flow

Ensure durable joints

Prevent the collar from moving into or out of the duct board or slipping

4122
3.1601.5f
Duct board plenum to air handler cabinet

Flange/c-channel will be fastened with screws with the duct board installed between c-channel flanges

Duct board plenum will be connected to air handler plenum with flexible duct in upflow units

Ensure durable joints

4123
3.1601.5g
Boot to wood

Predrill for screws or use ring shanked nails to fasten boot to wood

Ensure durable joints

4124
3.1601.5h
Boot to gypsum

If accessible, boot hanger will be fastened to adjacent framing with screws or nails

Boot will be connected to boot hanger with screws

If inaccessible, boot will be fastened to gypsum with a durable, adhesive sealant

Ensure durable joints

4125
3.1601.5i
Duct board to flex

Metal take-off collar with a hip and an internal metal backer will be used

Take-offs will be in accordance code requirements

Ensure durable joints

4126

3.1602.10 Hard and Flex Branch Ducts

Topic: 
Ducts
Subtopic: 
Duct Sealing
Desired Outcome: 
Deliver air from trunk to termination (register/diffuser) without leakage

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1602.10a
Work assessment

Installer prework assessment will be conducted to determine:

  • Location
  • Connection types
  • Leakage points

Access holes will be created for the work done at each location

Verify scope of work

Gain access to duct connections

4143
3.1602.10b
Reduce excess flex duct length

Excess flex duct will be removed between the takeoff at trunk and floor register boot

Improve air flow

4144
3.1602.10c
Duct connection repairs

Hard and flex duct branch connections will be rebuilt or repaired using compatible materials and will be mechanically fastened and sealed

Ends will be sealed

Ensure lasting durable connections

Minimize air leakage

Maximize air flow and distribution

4145
3.1602.10d
Repair work access

Access hole in the trunk/branch duct will be repaired and sealed

Insulation will be reinstalled

Bottom liner/belly will be repaired

Repair work access

Minimize heat transfer

4146
3.1602.10e
Combustion Appliance Zone (CAZ) testing

CAZ testing will be performed where combustion appliances are utilized

Identify unsafe equipment operating conditions

4147
3.1602.10f
Performance testing

Pre- and post-retrofit duct leakage will be performance tested using a duct blaster or pressure pan, and results will be documented and reported to the homeowner and/or program

Document post-retrofit duct leakage test has been performed

4148

3.1602.11 Air Sealing System

Topic: 
Ducts
Subtopic: 
Duct Sealing
Desired Outcome: 
Ducts and plenums sealed to prevent leakage

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1602.11a
New component to new component sealant selection

Any closure system used will meet or exceed applicable standards

Ensure effectiveness of air sealing system

4149
3.1602.11b
New component to existing component

Duct surface to receive sealant will be cleaned

Seams, cracks, joints, holes, and penetrations less than ¼" will be sealed using fiberglass mesh and mastic

Mastic alone will be acceptable for holes less than ¼" that are more than 10' from air handler

Holes greater than ¾" will be patched with metal or joint will be rebuilt to reduce the gap size

Seams, cracks, joints, holes, and penetrations between ¼" and ¾" will be sealed in two stages:

  • They will be backed using temporary tape (e.g., foil tape) as a support before sealing
  • They will be sealed using fiberglass mesh and mastic

Eliminate air leakage into or out of ducts and plenums

Ensure adhesion of primary seal (fiberglass mesh and mastic) to the duct

Reinforce seal

Support mastic and fiberglass mesh during curing

4150
3.1602.11c
Existing component to existing component

Duct surface to receive sealant will be cleaned

Fiberglass mesh and mastic will overlap temporary tape by at least 1" on all sides

Seams, cracks, joints, holes, and penetrations larger than ¾" will be repaired using rigid duct material

Fiberglass mesh and mastic will overlap repair joint by at least 1" on all sides

Fiberglass mesh and mastic will be the primary seal

Eliminate air leakage into or out of ducts and plenums

Ensure adhesion of primary seal (fiberglass mesh and mastic) to the duct

Reinforce seal

Support mastic and fiberglass mesh during curing

4151
3.1602.11d
Performance testing

Pre- and post-retrofit duct leakage will be performance tested using a duct blaster or pressure pan, and results will be documented and reported to the homeowner and/or program

Document post-retrofit duct leakage performed

4152

3.1602.12 Air Sealing System Components

Topic: 
Ducts
Subtopic: 
Duct Sealing
Desired Outcome: 
Ducts and plenums sealed to prevent leakage

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1602.12a
Duct boot to interior surface

Gaps between boot and gypsum less than a ¼" will be sealed using mastic or appropriate flexible caulking

Gypsum edge will be wetted before applying mastic

Prevent air leakage

4153
3.1602.12b
Air handler cabinet outside conditioned space

Joints will be sealed and cracks/holes not needed for proper function of unit will be sealed using removable sealant (e.g., foil tape)

Reduce air leakage while maintaining accessibility

4154
3.1602.12c
Performance testing

Pre- and post-retrofit duct leakage will be performance tested using a duct blaster or pressure pan, and results will be documented and reported to the homeowner and/or program

Document post-retrofit duct leakage test has been performed

4155

3.1602.13 Return—Framed Platform

Topic: 
Ducts
Subtopic: 
Duct Sealing
Desired Outcome: 
The return duct is installed to prevent air leakage

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1602.13a
Preparation

Debris and dirt will be cleaned out of the return platform

Allow for the application of rigid materials and sealants

4156
3.1602.13b
Infill and backing

Backing or infill will be provided as needed to meet the specific characteristics of the selected material and the characteristics of the open space

Backing or infill will not bend, sag, or move once installed

Material will be rated for use in return duct systems

Minimize hole size to ensure successful use of sealant

Ensure closure is permanent and supports all loads (e.g., return air pressure)

Ensure sealant does not fall out

4157
3.1602.13c
Sealant selection

Sealants will be compatible with their intended surfaces

Sealants will be continuous and meet fire barrier specifications

Select permanent sealant

Ensure sealant meets or exceeds the performance characteristics of the surrounding materials

4158

3.1602.2 Duct Spray Polyurethane Foam (SPF) Installation

Topic: 
Ducts
Subtopic: 
Duct Sealing
Desired Outcome: 
Exposed ductwork in unconditioned spaces insulated and sealed
For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1602.2a
Installation

Insulation will be installed according to manufacturer specifications and all provisions of the IRC

SPF will be applied to desired thickness, using pass thickness maximum as indicated by manufacturer

Sufficient insulation will be applied to all joints and around all penetrations to the conditioned space through walls, floors, and ceilings

SPF will be covered with proper fire protective coverings or coatings appropriate for location of ductwork and type of foam used, and provisions of the IRC and local codes

If ducts are used for air-conditioning, an appropriate vapor retarder will be applied on the SPF if open-cell SPF used

If 2" or more of closed-cell SPF is used, follow manufacturer specification to determine if additional vapor retarder is needed

The flame spread index will not be greater than 25 and the smoke- developed index will not be greater than 450 at the specified installed thickness

The foam plastic will be protected with an ignition barrier

Insulate and seal all exposed ductwork in unconditioned spaces

Manage moisture condensation on ductwork that carries cooled air in warm, moist climates

Provide adequate fire protection for exposed SPF

4127

3.1602.3 Proprietary Spray Application

Topic: 
Ducts
Subtopic: 
Duct Sealing
Desired Outcome: 
Ducts and plenums sealed to prevent leakage
For supporting material, see Referenced Standards, Calculation of the Infiltration Credit and Building America Solution Center.

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1602.3a
Internal or external application

Sealant will be applied in accordance with manufacturer specifications, as well as UL 181M, NFPA 90A, and NFPA 90B

Reduce duct leakage

4128

3.1602.8 Supply Plenum (Furnace to Trunk Duct Connection) in Both Upflow and Downflow Air Handler Configurations

Topic: 
Ducts
Subtopic: 
Duct Sealing
Desired Outcome: 
Deliver all air from air handler to the trunk duct without leakage or restriction

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1602.8a
Work assessment

Installer prework assessment will be conducted to determine:

  • Size of plenum
  • Alignment
  • Connection method
  • Existing sealing

Ensure an efficient and effective way to accomplish work

Verify scope of work

4129
3.1602.8b
Preparation

Debris will be removed

Surface will be prepared for work (e.g., remove tape, oil)

Floor will be prepared to receive the appropriately sized plenum

Provide unobstructed path for work access and air flow

Ensure adhesion of materials to be installed

Provide a properly sized plenum to maximize distribution of air flow (equal to the furnace discharge)

4130
3.1602.8c
Plenum rebuild or repair

Plenum will be rebuilt or repaired using compatible materials and will be:

  • Mechanically fastened
  • Sealed
  • Durable
  • Structurally sound
  • Insulated
  • Equipped with a vapor retarder where climate appropriate

If possible, flow diverter or turning vanes will be installed for air flow and/or balancing (e.g., bullhead Ts, offset air handler)

Minimize restrictions

Maximize air flow and air distribution

Minimize moisture issues

Prevent condensation on plenum

4131
3.1602.8d
Repair work access

Point of access options include:

Option 1: Through the trunk duct

  • Repair and seal access hole in the trunk duct
  • Install insulation
  • Repair belly/bottom liner

Option 2: Remove crossover duct

  • Reattach crossover duct
  • Seal and insulate crossover duct
  • Repair belly/bottom liner

Option 3: Remove air handler

  • Install new gasket, if necessary
  • Mechanically attach furnace to the structure
  • Reconnect utilities
  • Replace and seal panels

Option 4: Through the furnace panel

  • Replace and seal panels

Repair work access

Prevent condensation

Minimize heat loss and heat gain from plenum

4132
3.1602.8e
Safety testing

Equipment will be cycled

Combustion Appliance Zone (CAZ) test will be performed where combustion appliances are utilized

Verify operation

Identify unsafe equipment operating conditions

4133
3.1602.8f
Performance testing

Pre- and post-retrofit duct leakage will be performance tested using a duct blaster or pressure pan, and results will be documented and reported to the homeowner and/or program

Document post-retrofit duct leakage test has been performed

4134

3.1602.9 Crossover Ducts

Topic: 
Ducts
Subtopic: 
Duct Sealing
Desired Outcome: 
Deliver all air from trunk to trunk without leakage or restriction

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1602.9a
Work assessment

Installer prework assessment will be conducted to determine:

  • Location
  • Types
  • Leakage points

Verify scope of work

4135
3.1602.9b
Flexible crossover duct connections

Flexible crossover duct connections will be added, rebuilt, or repaired using compatible materials and will be:

  • Mechanically fastened at both inner and outer liner
  • Sealed using UL-listed sealant that is durable, structurally sound, insulated
  • Equipped with a vapor retarder

Whenever possible, rigid elbow or equivalent will be installed in crawl space crossover ducts

Floor insulation will be in contact with the outer liner of the crossover duct

Crossover duct vapor retarder will be sealed to the bottom liner (e.g., belly fabric)

New flex duct installation will be insulated to a minimum of R-8

When feasible, 26-gauge hard duct should be installed

If a new crossover is required, it must be insulated to at least R-8 and be air sealed

Ensure lasting durable connections

Minimize air leakage and heat transfer

Maintain duct diameter around the turns

Maximize air flow and distribution

4136
3.1602.9c
Support

Crossover ducts will be installed so they are not in contact with the ground

Crossover ducts will be supported in accordance with flex duct manufacturer specifications, local codes

Support materials will be applied in accordance with manufacturer specifications for interior dimensions and will not crimp ductwork, dip, or sag

Maximize air flow and distribution

Minimize condensation

Minimize air leakage and heat transfer

4137
3.1602.9d
Through-the-rim crossover duct

Through-the-rim crossover ducts will be located and accessed through the bottom liner and branch duct; all branch crossover duct connections and end caps will be located and accessed

Hole size (air pathway) will be maximized between branch crossover and trunk

All connections will be mechanically fastened and sealed inside duct

End caps will be sealed

Ensure all connections are identified

Maximize air flow and distribution

Ensure lasting durable connections

Minimize air leakage

4138
3.1602.9e
Repair work access for through-the-rim crossover

Access hole in the trunk duct will be repaired and sealed

Insulation will be reinstalled

Bottom liner/belly will be repaired

Repair work access

Minimize heat transfer

4139
3.1602.9f
Attic crossover

Access to the attic will be created for all attic areas that contain crossover ducts, where feasible

Plenum boxes and crossover duct connections will be rebuilt, mechanically fastened, and sealed

Access holes will be repaired

Ensure lasting durable connections

Minimize air leakage

Maximize air flow and distribution

Repair work access

4140
3.1602.9g
Combustion Appliance Zone (CAZ) testing

CAZ testing will be performed where combustion appliances are utilized

Identify unsafe equipment operating conditions

4141
3.1602.9h
Performance testing

Pre- and post-retrofit duct leakage will be performance tested using a duct blaster or pressure pan, and results will be documented and reported to the homeowner and/or program

Document post-retrofit duct leakage test has been performed

4142

3.1701.1 Holes, Penetrations, and Connection Seam

Topic: 
Additions
Subtopic: 
Attached Additions
Desired Outcome: 
The exterior of the seam is weathertight and connection between house and addition is properly sealed to minimize air leakage and moisture movement between unconditioned and conditioned space

Manufactured Housing

TitleSpecification(s)Objective(s)
3.1701.1a
Work assessment

Installer prework assessment will be conducted to determine:

  • Structural integrity
  • Roof leaks
  • Insect infestation
  • Accessibility
  • Mechanical attachment
  • Location of marriage wall seams
  • Number, type, size, and location of penetrations

Ensure work space is safe and ready for air sealing

Verify scope of work

4159
3.1701.1b
Hole, seam, line, and penetration sealing

Marriage wall seams will be sealed continuously at walls, floors, and ceiling connection

All accessible holes and penetrations in the addition envelope will be sealed

Backing or infill will be provided as needed, when accessible

Minimize air leakage

Maintain durability and/or flexibility

Ensure sealant is effective and durable

4160
3.1701.1c
Materials

Materials will be used or installed in accordance with product manufacturer specifications

Select materials to ensure durable and permanent repair

4161
3.1701.1d
Addition exterior wall air sealing

All holes and penetrations on exterior surface of exterior walls will be sealed to ensure resistance to outdoor elements

Intentionally ventilated walls will not be sealed at vent locations (e.g., weep holes)

All holes and penetrations on the interior surface of exterior walls will be repaired

Backing or infill will be provided as needed to meet the specific characteristics of the selected sealant and the characteristics of the penetration

Minimize air leakage

Maintain durability

Ensure resulting closure is permanent and supports expected wind and mechanical pressure loads

Ensure sealant is effective and durable

4162
3.1701.1e
Addition interior wall air sealing

All accessible holes and penetrations in top and bottom plates will be sealed

Backing or infill will be provided as needed to meet the specific characteristics of the selected sealant and the characteristics of the penetration

Minimize air leakage

Maintain durability

Ensure resulting closure is permanent and supports expected load

Ensure sealant is effective and durable

4163
3.1701.1f
Addition floor air sealing (decking, subfloor, floor decking)

Backing or infill will be provided as needed to meet the specific characteristics of the selected sealant and the characteristics of the penetration

The backing or infill will not bend, sag, or move once installed

Ensure resulting closure is permanent and supports expected wind and mechanical pressure loads

Ensure sealant is effective and durable

4164
3.1701.1g
Sealant selection

Sealants will be used to fill holes no larger than recommended by manufacturer specifications

Sealants will be compatible with all adjoining surfaces

Sealants will be continuous and meet fire barrier specifications, if required

Create a permanent seal

Ensure sealant meets or exceeds the performance characteristics of the surrounding materials

4165
3.1701.1h
Floor repair

Floor repair material will meet or exceed strength of existing floor material

Repair will span from joist to joist and blocking added as needed to support floor

Patches smaller than 144 square inches will not require repairs from joist to joist

Floor repair material will be glued, fastened, and air sealed

Ensure floor is structurally sound

Minimize air leakage

4166
3.1701.1i
Structural materials

Materials will be used or installed in accordance with product manufacturer specifications

Select materials to ensure durable and permanent repair

4167
3.1701.1j
Ceiling hole repair

Ceiling repair material must meet or exceed strength of existing ceiling material

Ceiling repair must span from truss to truss or add blocking as needed for support

The backing or infill will not bend, sag, or move once installed

All accessible damaged vapor barriers will be repaired

Penetrations through the air barrier must be repaired

Ensure ceiling is structurally sound

Minimize air leakage

Ensure closure is permanent and supports expected wind and mechanical pressure loads

Ensure sealant does not fall out

4168
3.1701.1k
High temperature application

Only noncombustible materials will be used in contact with chimneys, vents, and flues

Prevent a fire hazard

4169

Section 4:Insulation

4.1002.1 Above Roof Deck Insulation: Preparation

Topic: 
Attics
Subtopic: 
Above Roof Deck Insulation
Desired Outcome: 
Roof covering removed and replaced to expose roof deck for installation of above roof deck insulation

Manufactured Housing

TitleSpecification(s)Objective(s)
4.1002.1b
Roof covering replacement

New roof covering will be installed in accordance with manufacturer specifications and local building code requirements after installation of above roof deck insulation

Install roof covering correctly

Meet local code requirements

2025

4.1002.2 Above Deck Roof Deck Insulation: Installation

Topic: 
Attics
Subtopic: 
Above Roof Deck Insulation
Desired Outcome: 
Properly installed roof deck insulation

Manufactured Housing

TitleSpecification(s)Objective(s)
4.1002.2a
Sealing

Holes, gaps, and penetrations in existing roof deck will be sealed

Prevent air leaks

2026
4.1002.2b
Installation

Insulation will be installed according to manufacturer specifications without gaps, voids, compressions, misalignments, or wind intrusions

Insulation will be installed to prescribed R-value

Install insulation properly

2027
4.1002.2c
Occupant education

A dated receipt signed by the installer will be provided that includes:

  • Insulation type
  • Coverage area
  • R-value
  • Installed thickness and settled thickness (settled thickness required for loose-fill only)
  • Number of bags installed in accordance with manufacturer specifications (for loose-fill only)
  • Document job completion to contract specifications

    Confirm amount of insulation installed

    Comply with 16 CFR 460.17

    2028

    4.1003.10 Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Interior Access Through the Ceiling)

    Topic: 
    Attics
    Subtopic: 
    Attic Ceilings
    For supporting material, see Building America Solution Center.
    Desired Outcome: 
    Consistent, uniform thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow and air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary between the conditioned space and unconditioned space

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1003.10a
    Attic, ceiling, and roof verification

    All combustion appliance flues will be terminated to the exterior of the house and terminations will maintain proper clearance above snow loads

    A distance no less than 2" will be maintained between any combustion appliance flue and combustible materials, unless zero clearance flue is in place

    All ventilation systems will maintain a continuous connection and terminate to the outdoors

    All broken mushroom vents will be replaced or removed and sealed

    All plumbing stacks will be terminated to the outdoors

    Non-IC rated light fixtures will be replaced with airtight IC-rated fixtures, if feasible and only when installed measures will compromise the fire rating of the fixture

    All recessed lights will be labeled as having an air leakage rate no more than 2.0 CFM when tested in accordance with ASTM E 283 at a 75 pascals pressure differential

    All obvious ceiling penetrations will be sealed

    The space between combustion appliance flues and the ceiling will be sealed with fire-rated materials

    All roof, attic, and ceiling assemblies will be structurally sound:

    • Loose ceiling panels will be secured
    • Temporary ceiling bracing will be recommended while installing installation

    Dishing and pooling issues that allow standing water will be addressed

    All known roof water leaks will be repaired before installing installation

    Ensure occupant and worker safety

    Verify attic space is ready to insulate

    Ensure structural integrity of the roof and ceiling assembly

    Prevent intrusion of bulk moisture

    Prevent damage while installing insulation

    4182
    4.1003.10b
    Construction prep

    Special precautions will be taken to limit fiberglass and construction dust exposure to the occupant and occupant belongings

    Protect occupant health and safety

    Protect occupant belongings

    4183
    4.1003.10c
    Attic access

    Equidistant holes will be drilled in a straight row parallel to the longitudinal exterior wall of the ceiling

    If a longitudinal ceiling trim piece exists, trim piece will be removed and holes will be drilled behind the trim

    Hole location and size will be placed to provide access to allow for consistent and uniform coverage of installed insulation throughout the attic assembly

    There will be, at a minimum, one hole between each roof truss

    Holes will be large enough to accommodate the chosen fill tube without damaging the ceiling material during installation

    If a vapor barrier or ceiling-mounted insulation is present, access will be gained through them

    Attic will be visually inspected for the location of existing insulation, obstructions, hazards, and construction type

    Create access to the full attic cavity

    Determine insulation installation technique

    Prevent damage to ceiling

    Create a professionally finished ceiling

    4184
    4.1003.10d
    Blowing machine set up

    Blowing machine pressure test will be performed with air on full, feed off, and gate closed

    Hose outlet pressure will be set in accordance with manufacturer specifications

    Ensure machine is capable of delivering uniform insulation density and coverage

    4185
    4.1003.10e
    Fiberglass blown insulation installation

    Insulation will be installed to a density of 1.5 to 1.6 pounds per cubic foot

    Using fill tube, 100% of each cavity will be filled to a consistent density

    Fill tube will be inserted within 6" of the end of each attic cavity

    Insulation will be installed into the void of the attic cavity:

    • If existing insulation is roof-mounted, insulation will be blown below
    • If existing insulation is ceiling-mounted, insulation will be blown above
    • If existing insulation is mounted at both locations, insulation will be blown in between

    Flame spread and smoke-developed index for insulation will be a flame spread rating of 25 or less and a smoke development rating of 450 or less when tested in accordance with ASTM E84

    Fill entire attic cavity to the prescribed R-value to reduce air infiltration

    Avoid clogging of the cavity and the fill tube

    Prevent damage to the ceiling

    Fire safety will be maintained

    4186
    4.1003.10f
    Patching and sealing holes

    Holes will be plugged or covered and sealed to be aesthetically pleasing

    If existing trim was removed, it will be reinstalled

    Create an airtight seal

    Create a visually acceptable ceiling finish

    4187
    4.1003.10g
    Verification of details

    Installation process will be considered complete when installer has verified that damage has not occurred to the roof or ceiling assemblies during the installation process

    Verify the integrity of the house has been maintained

    4188
    4.1003.10h
    Onsite Documentation
    A dated receipt signed by the installer will be provided that includes:
    • Insulation type
    • Coverage area
    • R-value
    • Installed thickness and minimum settled thickness
    • Number of bags installed in accordance with manufacturer specifications

    Document job completion to contract specifications

    Confirm amount of insulation installed

    Ensure ability to match bags required for total area completed

    Comply with 16 CFR 460.17

    6774

    4.1003.11 Installing Fiberglass Blown Insulation in Roof-Over Constructions

    Topic: 
    Attics
    Subtopic: 
    Attic Ceilings
    Desired Outcome: 
    Consistent, uniform thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow and air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary between the conditioned space and unconditioned space

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1003.11a
    Roof-over overview

    If occupant will allow access from interior, installation through the ceiling is preferred

    Attic space created by the roof-over will be accessed in accordance with the Single-Family Attic Access SWS

    If the roof-over does not allow physical access to the roof-over attic, access to the original attic will be gained through roof venting

    If existing insulation height in the attic is less than the height of the heel plate (original attic), access will be made through the original roof and the original attic cavities will be filled before blowing insulation over the original roof

    At a minimum, the access holes to the original attic cavities will be sealed to prevent air leakage

    If existing insulation height is equal to or greater than the height of the heel plate (original attic), the insulation will be installed in the end cavities before blowing on top of the original roof

    Access to the end cavities will be gained and insulation will be installed

    At a minimum, the access holes to the original attic cavities will be sealed to prevent air leakage

    Insulation will not be installed on top of the original roof until the end cavities are insulated and air sealed in original attic

    If insulation is installed on top of the original roof, it will be installed in accordance with the Single-Family SWS Loose Fill Blown Fiberglass Insulation Installation

    Gain access to the combined attic spaces

    Address thermal bridging

    Correctly insulate the combined attic spaces

    4189
    4.1003.11b
    Onsite documentation

    A dated receipt signed by the installer will be provided that includes:

    • Insulation type
    • Coverage area
    • R-value
    • Installed thickness and minimum settled thickness
    • Number of bags installed in accordance with manufacturer specifications

    Document job completion to contract specifications

    Confirm amount of insulation installed

    Ensure ability to match bags required for total area completed

    Comply with 16 CFR 460.17

    6776

    4.1003.15 Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Gable End Access)

    Topic: 
    Attics
    Subtopic: 
    Attic Ceilings
    Desired Outcome: 

    Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1003.15a
    Attic, ceiling, and roof verification

    All combustion appliance flues will be terminated to the outdoors and terminations will maintain proper clearance above snow loads

    A distance no less than 2" will be maintained between any combustion appliance flue and combustible materials, unless zero clearance flue is in place

    All ventilation systems will maintain a continuous connection and terminate to the outdoors

    All broken mushroom vents will be replaced or removed and sealed

    All plumbing stacks will be terminated to the outdoors

    Non- IC rated light fixtures will be replaced with airtight IC -rated fixtures

    All recessed lights will be labeled as having an air leakage rate not more than 2.0 CFM when tested in accordance with ASTM E 283 at a 75 pascals pressure differential

    All obvious ceiling penetrations will be sealed

    The space between combustion appliance flues and the ceiling will be sealed with fire-rated materials

    All roof, attic, and ceiling assemblies will be structurally sound:

    • Loose ceiling panels will be secured
    • Temporary ceiling bracing will be recommended during the insulation installation process

    Dishing and pooling issues that allow standing water will be addressed

    All known roof water leaks will be repaired before installing installation

    Ensure occupant and worker safety

    Verify attic space is ready to insulate

    Ensure structural integrity of the roof and ceiling assembly

    Prevent intrusion of bulk moisture

    Prevent damage while installing insulation

    6982
    4.1003.15b
    Attic access

    Access to the attic cavity will be created through the gable vents.

    Attic will be visually inspected for the location of existing insulation, wiring, flues, obstructions, hazards, and construction type

    Create access to the full attic cavity

    Maintain the integrity of the roof truss

    Determine technique for installing insulation

    6984
    4.1003.15c
    Blowing machine set up

    Blowing machine pressure test will be performed with air on full, feed off, and gate closed

    Hose outlet pressure will be set in accordance with manufacturer specifications

    Ensure machine is capable of delivering uniform insulation density and coverage

    6985
    4.1003.15d
    Fiberglass blown insulation installation

    Insulation will be installed to a density of 1.5 to 1.6 pounds per cubic foot

    Using fill tube, 100% of each roof cavity will be filled to a consistent density

    Insulation will be installed into the void of the attic cavity:

    • If existing insulation is roof-mounted, insulation will be blown below
    • If existing insulation is ceiling-mounted, insulation will be blown above
    • If existing insulation is mounted at both locations, insulation will be blown in between

    Flame spread and smoke-developed index for insulation will be a flame spread rating of 25 or less and a smoke development rating of 450 or less when tested in accordance with ASTM E84​​​​​​​

    Fill entire attic cavity to the prescribed R-value to reduce air infiltration

    Avoid clogging of the cavity and the fill tube

    Prevent damage to the ceiling

    Fire safety will be maintained

    6986
    4.1003.15e
    Replace Gable End Vent Covers

    Reinstall the gable end vents

    Prevent pest intrusion into attic

    Protect installed insulation

    6987
    4.1003.15f
    Verification of details

    Installation process will be considered complete when installer has verified that damage has not occurred to the roof or ceiling assemblies during the installation process

    Verify the integrity of the house has been maintained

    6988
    4.1003.15g
    Onsite documentation

    A dated receipt signed by the installer will be provided that includes:

    • Insulation type
    • Coverage area
    • R-value
    • Installed thickness and minimum settled thickness
    • Number of bags installed in accordance with manufacturer specifications

    Document job completion to contract specifications

    Confirm amount of insulation installed

    Ensure ability to match bags required for total area complete

    Comply with 16 CFR 460.17

    6989

    4.1003.8 Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Roof Side Lift)

    Topic: 
    Attics
    Subtopic: 
    Attic Ceilings
    For supporting material, see Building America Solution Center.
    Desired Outcome: 
    Consistent, uniform thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow and air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary between the conditioned space and unconditioned space

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1003.8a
    Attic, ceiling, and roof verification

    All combustion appliance flues will be terminated to the outdoors and terminations will maintain proper clearance above snow loads

    A distance no less than 2" will be maintained between any combustion appliance flue and combustible materials, unless zero clearance flue is in place

    All ventilation systems will maintain a continuous connection and terminate to the outdoors

    All broken mushroom vents will be replaced or removed and sealed

    All plumbing stacks will be terminated to the outdoors

    Non-IC rated light fixtures will be replaced with airtight IC-rated fixtures

    All recessed lights will be labeled as having an air leakage rate no more than 2.0 CFM when tested in accordance with ASTM E 283 at a 75 pascals pressure differential

    All obvious ceiling penetrations will be sealed

    The space between combustion appliance flues and the ceiling will be sealed with fire-rated materials

    All roof, attic, and ceiling assemblies will be structurally sound; loose ceiling panels will be secured

    Temporary ceiling bracing will be recommended during the insulation installation process

    Dishing and pooling issues that allow standing water will be addressed

    All known roof water leaks will be repaired before insulation installation

    Ensure occupant and worker safety

    Verify attic space is ready to insulate

    Ensure structural integrity of the roof and ceiling assembly

    Prevent intrusion of bulk moisture

    Prevent damage during the insulation installation process

    4170
    4.1003.8b
    Attic access

    Fasteners will be removed from the J channel and the roof edge on the most easily accessible side of the house

    Roof will be separated from the heel plate and siding roof will be lifted and propped to accommodate fill tube

    Length of opening will be enough to allow ease of access and reattachment while minimizing potential damage from high winds

    If subsheathing is present, access will be gained through subsheathing

    Attic will be visually inspected for the location of existing insulation, obstructions, hazards, and construction type

    Create access to the full attic cavity

    Protect roof from wind damage during installation

    Ensure ease of roof reattachment

    Determine insulation installation technique

    4171
    4.1003.8c
    Blowing machine set up

    Blowing machine pressure test will be performed with air on full, feed off, and gate closed

    Hose outlet pressure will be set in accordance with manufacturer specifications

    Ensure machine is capable of delivering uniform insulation density and coverage

    4172
    4.1003.8d
    Fiberglass blown insulation installation

    Insulation will be installed to a density of 1.5 to 1.6 pounds per cubic foot

    Using fill tube, 100% of each cavity will be filled to a consistent density

    Fill tube will be inserted within 6" of the end of each attic cavity

    Insulation will be installed into the void of the attic cavity:

    • If existing insulation is roof-mounted, insulation will be blown below
    • If existing insulation is ceiling-mounted, insulation will be blown above
    • If existing insulation is mounted at both locations, insulation will be blown in between

    Avoid overfilling of roof edges and above attic trusses

    Flame spread and smoke-developed index for insulation will be a flame spread rating of 25 or less and a smoke development rating of 450 or less when tested in accordance with ASTM E84

    Fill entire attic cavity to the prescribed R-value to reduce air infiltration

    Avoid clogging of the cavity and the fill tube

    Prevent damage to the ceiling

    Allow roof to be returned to original position

    Fire safety will be maintained

    4173
    4.1003.8e
    Roof reattachment

    If existing J channel is damaged, it will be replaced

    Existing sealant will be removed from the roof edge and J channel

    At a minimum, new sealant will be reinstalled at the original location

    Roof and J channel will be fastened to the original location with new screws

    All seams, edges, and penetrations will be sealed as necessary

    Prepare roof edge and J channel for reattachment

    Reattach roof edge and J channel without leaks

    4174
    4.1003.8f
    Verification of details

    Installation process will be considered complete when installer has verified that damage has not occurred to the roof or ceiling assemblies during the installation process

    Verify the integrity of the house has been maintained

    4175
    4.1003.8g
    Onsite documentation

    A dated receipt signed by the installer will be provided that includes:
    • Insulation type
    • Coverage area
    • R-value
    • Installed thickness and minimum settled thickness 
    • Number of bags installed in accordance with manufacturer specifications 

    Document job completion to contract specifications

    Confirm amount of insulation installed 

    Ensure ability to match bags required for total area completed

    Comply with 16 CFR 460.17

    6782

    4.1003.9 Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Exterior Access from Top of Roof)

    Topic: 
    Attics
    Subtopic: 
    Attic Ceilings
    For supporting material, see Building America Solution Center.
    Desired Outcome: 
    Consistent, uniform thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow and air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary between the conditioned space and unconditioned space

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1003.9a
    Attic, ceiling, and roof verification

    All combustion appliance flues will be terminated to the outdoors and terminations will maintain proper clearance above snow loads

    A distance no less than 2" will be maintained between any combustion appliance flue and combustible materials, unless zero clearance flue is in place

    All ventilation systems will maintain a continuous connection and terminate to the outdoors

    All broken mushroom vents will be replaced or removed and sealed

    All plumbing stacks will be terminated to the outdoors

    Non-IC rated light fixtures will be replaced with airtight IC-rated fixtures

    All recessed lights will be labeled as having an air leakage rate not more than 2.0 CFM when tested in accordance with ASTM E 283 at a 75 pascals pressure differential

    All obvious ceiling penetrations will be sealed

    The space between combustion appliance flues and the ceiling will be sealed with fire-rated materials

    All roof, attic, and ceiling assemblies will be structurally sound:

    • Loose ceiling panels will be secured
    • Temporary ceiling bracing will be recommended during the insulation installation process

    Dishing and pooling issues that allow standing water will be addressed

    All known roof water leaks will be repaired before installing installation

    Ensure occupant and worker safety

    Verify attic space is ready to insulate

    Ensure structural integrity of the roof and ceiling assembly

    Prevent intrusion of bulk moisture

    Prevent damage while installing insulation

    4176
    4.1003.9b
    Attic access

    Access to the attic cavity will be created through the gable vents.

    Attic will be visually inspected for the location of existing insulation, wiring, flues, obstructions, hazards, and construction type

    Create access to the full attic cavity

    Maintain the integrity of the roof truss

    Determine technique for installing insulation

    4177
    4.1003.9c
    Blowing machine set up

    Blowing machine pressure test will be performed with air on full, feed off, and gate closed

    Hose outlet pressure will be set in accordance with manufacturer specifications

    Ensure machine is capable of delivering uniform insulation density and coverage

    4178
    4.1003.9d
    Fiberglass blown insulation installation

    Insulation will be installed to a density of 1.5 to 1.6 pounds per cubic foot

    Using fill tube, 100% of each cavity will be filled to a consistent density

    Fill tube will be inserted within 6" of the end of each attic cavity

    Insulation will be installed into the void of the attic cavity:

    • If existing insulation is roof-mounted, insulation will be blown below
    • If existing insulation is ceiling-mounted, insulation will be blown above
    • If existing insulation is mounted at both locations, insulation will be blown in between

    Insulation will be filled no higher than the top of the truss

    Flame spread and smoke-developed index for insulation will be a flame spread rating of 25 or less and a smoke development rating of 450 or less when tested in accordance with ASTM E84

    Fill entire attic cavity to the prescribed R-value to reduce air infiltration

    Avoid clogging of the cavity and the fill tube

    Prevent damage to the ceiling

    Allow roof to be returned to original position

    Fire safety will be maintained

    4179
    4.1003.9e
    Patching and sealing openings

    If the roof is sliced:

    • A solid metal ridge cap will be centered over the slice
    • A flexible and durable sealant will be sandwiched between the roof and the ridge cap
    • Screws will be installed to prevent wrinkles and create a permanent seal
    • Screws will not go into any wood framing
    • A durable and flexible final coating will be applied over the screws and edge of the ridge cap to create a continuous seal between the roof and the perimeter of the ridge cap

    For holes that are drilled or cut, the initial patch will be applied using the following procedure:

    • At least 6" of surface surrounding the opening will be cleaned before patch is installed
    • Sealant will be continuous and applied in between the patch and the roof
    • Sealant will be an all-weather adhesive that is flexible and durable

    If a metal patch is used:

    • Patch will overlap the opening by 2" on all sides
    • Gauge will be equal to or greater than the roof material
    • Fasteners will be installed to prevent wrinkles and create a permanent seal
    • If a plug is used, it will be flanged and have a tight fit
    • Screws will not go into any wood framing

    A durable and flexible 45 mil adhesive patch will be applied in accordance to manufacturer specifications over the initial patch and will have at a minimum:

    • Tear strength of 640g
    • Elongation of 380%
    • Application temperature no lower than 55°F and no greater than 110°F
    • Services temperature no less than -25°F and no greater than 150°F
    • Adhesive patch will overlap the initial patch by 2" on all sides
    • A durable and flexible final coating will be applied over the adhesive patch to create a continuous seal between the roof and the perimeter of the patch
    • All remaining seams, edges, and penetrations will be sealed as necessary

    Effectively patch and seal all openings

    Create a durable patch that will prevent roof leaks

    4180
    4.1003.9f
    Verification of details

    Installation process will be considered complete when installer has verified that damage has not occurred to the roof or ceiling assemblies during the installation process

    Verify the integrity of the house has been maintained

    4181
    4.1003.9g
    Onsite documentation

    A dated receipt signed by the installer will be provided that includes:

    • Insulation type
    • Coverage area
    • R-value
    • Installed thickness and minimum settled thickness 
    • Number of bags installed in accordance with manufacturer specifications

    Document job completion to contract specifications

    Confirm amount of insulation installed 

    Ensure ability to match bags required for total area complete

    Comply with 16 CFR 460.17

    6784

    4.1088.6 Installing Insulation at Flat and Cathedral Ceiling Transition Wall

    Topic: 
    Attics
    Subtopic: 
    Special Considerations
    Desired Outcome: 
    Consistent, uniform thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow and air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary between the conditioned space and unconditioned space

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1088.6a
    Insulation installation verification

    A visual inspection of the highest point of the transition wall will be completed

    Access points will be determined from the gable end, roof, ceiling, or interior paneling

    Verify the height and the accessibility of the attic

    4190
    4.1088.6b
    Access attic

    Attic will be accessed through the location that allows the most efficient and effective insulation coverage

    Gain access to the flat and cathedral ceiling transition wall

    4191
    4.1088.6c
    Blowing

    Blowing machine pressure test will be performed with air on full, feed off, and gate closed

    Insulation will be blown against the transition wall until the wall is covered

    Ensure machine is capable of delivering uniform insulation density and coverage to meet manufacturer specifications for loose blown insulation

    Create a thermal barrier at the transition wall

    4192
    4.1088.6d
    Spray two-part foam

    Insulation will be installed to prescribed R-value in accordance with manufacturer specifications

    Spray polyurethane foam (SPF) will be applied to desired thickness, using pass thickness maximum as indicated by manufacturer

    Insulate and seal transition wall

    4193
    4.1088.6e
    Batt

    Batt insulation will be installed in accordance with manufacturer specifications without gaps, voids, compressions, misalignments, or wind intrusions

    Insulation will be installed to the prescribed R-value

    Vapor barrier will be installed based on regional considerations

    Insulate to prescribed R-value

    4194
    4.1088.6f
    Patching and sealing access points

    Created access points will be covered and sealed in an aesthetically pleasing manner

    Existing access points (e.g., gable vent) will be returned to the original condition

    If existing trim was removed, it will be reinstalled

    Create an airtight seal

    Create an aesthetically pleasing finish

    4195
    4.1088.6g
    Verification of details

    Installation process will be considered complete when installer has verified that damage has not occurred to the roof or ceiling assemblies during the installation process

    Verify the integrity of the house has been maintained

    4196
    4.1088.6h
    Onsite Documentation
    A dated receipt signed by the installer will be provided that includes:
    • Insulation type
    • Coverage area
    • R-value
    • • Installed thickness and settled thickness (settled thickness required for loose-fill only) • Number of bags installed in accordance with manufacturer specifications (for loose-fill only)
    Document job completion to contract specifications Confirm amount of insulation installed Comply with 16 CFR 460.176794

    4.1101.5 Exterior Wall Dense Packing

    Topic: 
    Walls
    Subtopic: 
    Preparation
    Desired Outcome: 
    Walls properly prepared to receive dense pack Dense pack The process of installing loose-fill insulation to reduce air flow and perform to a stated R-value insulation

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1101.5a
    Preparation

    Lead safety procedures will be followed

    Cavities will be free of hazards, intact, and able to support dense pack pressures

    Drilling hazards (e.g., wiring, venting, fuel piping) will be located

    Blocking will be installed around:

    • All openings to inside of the crawl space and basement for fibrous material
    • High temperature fire-rated materials
    • Wiring and electrical hazards
    • Heat sources

    Access to exterior wall cavities will be gained, sheathing will be drilled as needed and probed to locate each cavity, wall studs, and blockers

    When accessing wall cavities, the interior will be masked to control dust during drilling

    Electricity supply will be confirmed and will support blowing machine power demand

    Blowing machine pressure test will be performed with air on highest level, feed off, and gate closed

    Hose outlet pressure will be at least 80 IWC or 2.9 psi for cellulose insulation; for other types of dense pack insulation, check manufacturer specification for blowing machine set up

    Prevent damage to the house

    Provide a clean work space

    Provide thorough access to allow 100% coverage

    Ensure proper equipment and process results in consistent density

    Prevent settling and retard air flow through cavities

    Protect worker and occupant health

    4197
    4.1101.5b
    Exterior dense pack

    Using fill tube, 100% of each cavity will be filled to a consistent density:

    • Blown fiberglass, mineral fiber, rock and slag wool, or spray foam used in an enclosed cavity will be installed at or above the manufacturer recommended density to limit air flow that corresponds to an air permeance value of 3.5 cubic feet per minute per square foot at 50 pascals
    • Cellulose material will be installed to a minimum density of 3.5 pounds per cubic foot when the wall sheathing and interior cladding will endure this level of pressure
    • Loose fiberglass material will be installed and will be specifically approved for air flow resistance to a minimum density in accordance with manufacturer specifications
    • The number of bags installed will be confirmed and will match the number to achieve 1.5-1.6 pounds per cubic foot
    • Insulation will be verified to prevent visible air movement using chemical smoke at 50 pascals of pressure difference

    Eliminate voids and settling

    Minimize framing cavity air flows

    4198

    4.1104.1 Stuffing Wall Cavities with Fiberglass Batts

    Topic: 
    Walls
    Subtopic: 
    Manufactured Housing Wall Insulation
    Desired Outcome: 
    Consistent thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow and air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary between the conditioned space and unconditioned space

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1104.1a
    Access wall cavities

    If skirting overlaps siding, skirting will be detached to allow access to the wall cavity

    Fasteners will be removed from the bottom of the siding, working upward until the siding can be pulled away from the framing approximately 6" without damaging the siding

    Temporary fasteners will be installed near the bottom of the siding panels at the seams to prevent separation

    If a subsheathing is present under the siding, access through the subsheathing will be required

    Gain access to the wall cavity without damaging or separating the siding

    4199
    4.1104.1b
    Exterior wall cavity inspection

    Wall cavities will be inspected for moisture damage, pest locations, and integrity of the wiring, and holes to the interior

    Siding will be repaired as necessary

    Location of belt rails, obstructions, and existing insulation will be identified

    All interior surfaces of exterior walls will be inspected for loose paneling joints, occupant wall hangings, location of switches and outlets, and other wall obstructions

    Objects will be removed from the interior surfaces of the walls being insulated

    Interior paneling will be repaired as necessary

    Prepare wall cavity for insulation

    Prevent water leaks from occurring

    4200
    4.1104.1c
    Fiberglass batt installation tool (stuffer)

    A sheet of polycarbonate, such as Lexan, will be cut to the following specifications to create a stuffer tool:

    • Approximately 1' x 8' x ¼" with a 5 degree bend 7' ½" from the bottom
    • All corners of the Lexan (polycarbonate) will be rounded and all edges will be sanded

    Other clear sheet plastics will not be used due to a tendency to shatter under stress

    Create a tool to install a fiberglass batt into the cavity

    Ensure worker safety

    4201
    4.1104.1d
    Fiberglass batt installation

    Thickness of the batt will fill the void without deforming siding or damaging structure

    Fiberglass batts will fill the cavity (e.g., batt may be cut approximately 1" longer to ensure proper fill and allow for lap at the top)

    Flexible membrane will have an appropriate perm rating for the region

    Flexible membrane will be cut 2" wider than the cavity and approximately 1' longer than the batt

    Stuffer tool, membrane, and fiberglass batt will be aligned for installation

    Stuffer tool will be used to install the fiberglass batt and membrane at the same time

    Excess fiberglass batt and membrane vapor retarder extending below the cavity will be rolled and tucked into the cavity

    A poly-encased fiberglass batt may be used in place of the fiberglass batt and membrane assembly

    The membrane will be installed in contact with the side of the wall that is compatible with the local climate zone

    Maintain integrity of the batt

    Aid in the installation process

    4202
    4.1104.1e
    Sub-sheathing patch and repair

    Subsheathing will be patched or repaired as necessary

    Ensure the integrity of the drainage plane

    4203
    4.1104.1f
    Reattachment

    If skirting was removed, skirting will be reinstalled to shed water to the outside of the skirting

    Siding will be reattached with new fasteners

    Siding will be reattached without bulges or wrinkles

    Ensure the integrity of the drainage plane

    Return siding to existing conditions without damage

    4204
    4.1104.1g
    Onsite documentation
    A dated receipt signed by the installer will be provided that includes:
    • Coverage area
    • Thickness
    • R-value

    Document job completion to contract specifications

    Confirm amount of insulation installed

    Comply with 16 CFR 460.17

    6806

    4.1104.2 Fiberglass Blown Insulation Installation (Lifting Siding)

    Topic: 
    Walls
    Subtopic: 
    Manufactured Housing Wall Insulation
    Desired Outcome: 
    Consistent thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow and air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary between the conditioned space and unconditioned space

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1104.2a
    Access wall cavities

    If skirting overlaps siding, skirting will be removed

    Fasteners will be removed from the bottom of the siding, working upward until the siding can be pulled away from the framing approximately 6" without damaging the siding

    Temporary fasteners will be installed near the bottom of the siding panels at the seams

    If a subsheathing is present under the siding, access through the subsheathing will be required

    Gain access to the wall cavity without causing damage or separation of the siding

    4205
    4.1104.2b
    Exterior wall cavity inspection

    Installer prework assessment will be conducted to determine:

    • Moisture damage
    • Presence of infestation or pests
    • Location and integrity of wiring
    • Holes to the interior and exterior
    • Loose paneling or siding
    • Location of belt rails
    • Location of wall obstructions (switches, outlets)
    • Existing insulation
    • Wall hangings for removal during work

    Problems will be corrected before work begins

    Prepare wall cavity for insulation

    Prevent water leaks

    4206
    4.1104.2c
    Blowing machine set up

    Blowing machine pressure test will be performed with air on full, feed off, and gate closed

    Hose outlet pressure will be set according to manufacturer specifications

    Achieve uniform insulation density and coverage

    4207
    4.1104.2d
    Fiberglass blown insulation installation

    Insulation will meet a flame spread rating of 25 or less and a smoke development rating of 450 or less when tested in accordance with ASTM E84

    Insulation will be installed to a density of 1.5 to-1.6 pounds per cubic foot

    Using fill tube, 100% of each cavity will be filled to a consistent density

    Special precaution will be taken not to overfill the bottom of the cavity

    Fill tube will be inserted from the bottom of the wall cavity within 6" of the top of the cavity between the interior paneling and any existing insulation

    Fire safety maintained

    Fill entire wall cavity to the prescribed R-value to reduce air infiltration

    Ensure bottom portion of siding will reattach properly

    Avoid clogging of the cavity and the fill tube

    4208
    4.1104.2e
    Subsheathing patch and repair

    Subsheathing will be patched or repaired as necessary

    Ensure the integrity of the drainage plane

    4209
    4.1104.2f
    Reattachment

    If skirting was removed, skirting will be reinstalled to shed water to the outside of the skirting

    Siding will be reattached with new fasteners

    Siding will be reattached without bulges or wrinkles

    Ensure the integrity of the drainage plane

    Reattach siding without damage

    4210
    4.1104.2g
    Onsite documentation
    A dated receipt signed by the installer will be provided that includes:
    • Coverage area
    • Thickness
    • R-value

    Document job completion to contract specifications

    Confirm amount of insulation installed Comply with 16 CFR 460.17
    6808

    4.1104.3 Fiberglass Blown Insulation Installation (via Penetrations Through or Behind the Siding)

    Topic: 
    Walls
    Subtopic: 
    Manufactured Housing Wall Insulation
    Desired Outcome: 
    Consistent, uniform thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow and air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary between the conditioned space and unconditioned space

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1104.3a
    Access wall cavities

    With T-111, OSB, or plywood type siding:

    • Access to exterior wall cavities will be gained and sheathing will be drilled as needed and probed to locate each cavity, wall studs, and blockers
    • Drilled holes will be large enough to accommodate an appropriately sized fill tube
    • Holes will be drilled around the perimeter of the home, parallel to the bottom plate and an equal distance apart
    • The line of holes will be located under the lowest window sill when possible

    With lap siding:

    • Course of siding will be unhooked or removed
    • Holes sufficiently large for the fill tube will be drilled in every wall cavity

    Gain access to the wall cavity

    Ensure holes are easily covered with an aesthetically pleasing trim strip

    4211
    4.1104.3b
    Exterior wall cavity inspection

    Installer prework assessment will be conducted to determine:

    • Moisture damage
    • Presence of infestation or pests
    • Location and integrity of wiring
    • Holes to the interior and exterior
    • Loose paneling or siding
    • Location of belt rails
    • Location of wall obstructions (switches, outlets)
    • Existing insulation
    • Wall hangings for removal during work

    Problems will be corrected before work begins

    Prepare wall cavity for insulation

    Prevent water leaks

    4212
    4.1104.3c
    Blowing machine set up

    Blowing machine pressure test will be performed with air on full, feed off, and gate closed

    Hose outlet pressure will be set in accordance with manufacturer specifications

    Ensure machine is capable of delivering uniform insulation density and coverage

    4213
    4.1104.3d
    Fiberglass blown insulation installation

    Flame spread and smoke-developed index for insulation will meet a flame spread rating of 25 or less and a smoke development rating of 450 or less when tested in accordance with ASTM E84

    Insulation will be installed to a density of 1.5 to 1.6 pounds per cubic foot

    Using fill tube, 100% of each cavity will be filled to a consistent density

    Fill tube will be inserted within 6" of the top of the cavity between the interior paneling and any existing insulation

    Fill entire wall cavity to the prescribed R-value to reduce air infiltration

    Avoid clogging of the cavity and the fill tube

    Fire safety will be maintained

    4214
    4.1104.3e
    Plug and seal holes

    Holes will be plugged and sealed

    Ensure the integrity of the drainage plane

    4215
    4.1104.3f
    Final wall assembly

    For T-111 and equivalent siding:

    • A preprimed trim will be centered and installed over the holes
    • Height of the trim will span from 1" above to 1" below the hole
    • A continuous caulk seal will be applied between the trim and siding
    • Caulk seal will be above the holes
    • Top edge of the trim will be sealed to the siding with a continuous caulk seal

    For lap siding:

    • Siding will be reattached without bulges or wrinkles
    • Siding will be hooked into the original position

    Ensure the integrity of the drainage plane

    Return siding to existing conditions without damage

    4216
    4.1104.3g
    Onsite documentation
    A dated receipt signed by the installer will be provided that includes:
    • Coverage area
    • Thickness
    • R-value

    Document job completion to contract specifications

    Confirm amount of insulation installed

    Comply with 16 CFR 460.17

    6810

    4.1104.4 Spray Foam Insulation Installation in Cavities above Doors and Windows

    Topic: 
    Walls
    Subtopic: 
    Manufactured Housing Wall Insulation
    Desired Outcome: 
    Consistent, uniform thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow and air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary between the conditioned space and unconditioned space

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1104.4a
    Access wall cavities above doors and windows

    All interior surfaces of the cavities planned to be insulated will be inspected for loose paneling joints, occupant wall hangings, and other wall obstructions

    Objects will be removed from the interior surfaces of the exterior walls as needed

    Interior paneling will be repaired and secured as necessary

    Holes will be drilled from the interior of the house

    A hole no larger than the spray nozzle will be drilled in each cavity above the door or window

    When possible, the hole will be drilled in the panel groove

    Prepare wall cavity for insulation

    Prevent damage from overspray to occupant possessions

    4217
    4.1104.4b
    Cavity inspection

    Cavity will be probed to assess conditions and volume of cavity

    Determine the approximate amount of foam to be installed in the cavity

    4218
    4.1104.4c
    Insulation installation

    Flame spread index of foam insulation will not exceed 75 and a smoke- developed index of no more than 450 when tested in the maximum thickness intended for use in accordance with ASTM E84 or UL 723

    Foam insulation will be separated from the interior of the building by an approved thermal barrier at a minimum of 1/2" gypsum wallboard or a material that is tested in accordance with the acceptance criteria of both the Temperature Transmission Fire Test and the Integrity Fire Test of NFPA 275

    Two-part foam selection will be based on regional considerations

    100% of each cavity will be filled to a consistent density without bulging of panels or siding

    Fill entire wall cavity to the prescribed R-value to reduce air infiltration

    Fire safety will be maintained

    4219
    4.1104.4d
    Final wall assembly

    A color-corresponding sealant will be applied to the access hole

    Ensure wall is aesthetically pleasing

    4220
    4.1104.4e
    Onsite documentation
    A dated receipt signed by the installer will be provided that includes:
    • Coverage area
    • Thickness
    • R-value

    Document job completion to contract specifications

    Confirm amount of insulation installed

    Comply with 16 CFR 460.17

    6812

    4.1302.1 Prepare Belly Floor Cavity for Insulation

    Topic: 
    Floors
    Subtopic: 
    Manufactured Housing Belly Preparation
    Desired Outcome: 
    Belly floor cavity ready for insulation

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1302.1a
    Work assessment

    Gas, water, waste, and electrical lines will be checked for:

    • Plumbing leaks
    • Gas/oil leaks
    • Attachment
    • Standing water
    • Raw sewage
    • Pests

    Ensure that floor space is safe and ready for work

    Verify scope of work

    4221
    4.1302.1b
    Preparation

    Where bottom board/rodent barrier is missing or damaged and accessible, the following will be ensured:

    • Duct sealing completed
    • Gas, water, and electrical lines secured at least every 4' to a floor joist or framing member
    • Water line will be located on the warm side of the insulation; if not, the water lines will be insulated appropriately
    • No water or gas leaks are present
    • Waste lines are sloped to ¼" per foot
    • Bottom board/rodent barrier is sound/strong enough to support insulation

    When bottom board is intact, the following will be ensured:

    • Holes and penetrations in the bottom board and decking sealed
    • Duct sealing completed
    • No water or gas leaks present
    • Bottom board is sound/strong enough to support insulation
    • Water lines are secured to the floor joists/warm side of the insulation; if not, the water lines will be insulated appropriately

    Problems will be corrected before floor cavity insulation work begins

    Ensure problems are corrected before floor cavity insulation work begins

    Keep pipes from freezing

    4222

    4.1303.1 Insulation of Floor Cavity with Blown Material

    Topic: 
    Floors
    Subtopic: 
    Manufactured Housing Floor Cavity Insulation
    Desired Outcome: 
    Consistent thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow between conditioned and unconditioned space that reduces heat flow

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1303.1a
    R-value

    Insulation will be installed in accordance with recommended R-value and density

    Insulate to prescribed R-value for the climate zone

    4223
    4.1303.1b
    Work assessment

    Road and rodent barrier must be intact and free from holes and capable of supporting the insulation

    Ensure bottom board is intact

    Ensure insulation is supported

    Protect cavity from infestation

    4224
    4.1303.1c
    Insulate floors

    Each cavity will be insulated to specified R-value and density

    The number of bags installed will be confirmed and will match the number required on the coverage chart

    Eliminate voids and settling

    4225
    4.1303.1d
    Materials

    Flame spread index of selected materials will not exceed 25 with an accompanying smoke-developed index not to exceed 450 when tested in accordance with ASTM E84 or UL 723

    Flame spread index of foam insulation will not exceed 75 and a smoke- developed index of no more than 450 when tested in the maximum thickness intended for use in accordance with ASTM E84 or UL 723

    Foam insulation will be separated from the interior of the building by an approved thermal barrier at a minimum of 1/2" gypsum or a material that is tested in accordance with the acceptance criteria of both the Temperature Transmission Fire Test and the Integrity Fire Test of NFPA 275

    Selected material will be of minimal water absorbency

    Selected material will be noncorrosive

    Ensure durability

    Prevent moisture damage

    Fire safety will be maintained

    4226
    4.1303.1e
    Occupant education

    A dated receipt signed by the installer will be provided that includes:

  • Insulation type
  • Coverage area
  • R-value
  • Installed thickness and minimum settled thickness
  • Number of bags installed in accordance with manufacturer specifications
  • Document job completion to contract specifications

    Confirm amount of insulation installed

    Ensure ability to match bags required for total area completed

    Comply with 16 CFR 460.17

    4227

    4.1303.2 Insulation of Floor Cavity with Batt Material

    Topic: 
    Floors
    Subtopic: 
    Manufactured Housing Floor Cavity Insulation
    Desired Outcome: 
    Consistent thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow between conditioned and unconditioned space that reduces heat flow

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1303.2a
    R-value

    Insulation will be installed in accordance with recommended R-value and density

    Insulate to prescribed R-value for the climate zone

    4228
    4.1303.2b
    Work assessment

    Ensure complete accessibility of floor cavity

    Clean floor cavities

    Remove all remnants of previous insulation and bottom board

    Ensure work area is clean, safe, and ready to accept insulation

    4229
    4.1303.2c
    Insulate floors

    Each cavity will be insulated to specified R-value and density

    If insulation has facing, facing will be in contact with the heated side

    Insulation will be in contact with subfloor

    Insulation will not have gaps, voids, or be compressed

    Insulation will be supported (e.g., metal insulation supports) to maintain a permanent contact with subfloor

    Insulation will be notched around all wires, pipes, and blocks

    Ducts and water lines will be insulated for climate conditions

    Water lines will be located above the warm side of the insulation (toward the conditioned space), when feasible

    A rigid air barrier will be installed in contact with the bottom of the joists, when feasible

    Rigid air barrier will be fastened as to not sag, bend, or fall off

    Seams, holes, and joints in the air barrier will be sealed

    In cases where HVAC ducts hang below the level of the rigid air barrier and insulation, the ducts will be insulated and air barrier provided that is sealed to the rigid air barrier

    Eliminate voids

    Minimize conductive heat transfer across the floor system

    Ensure durability

    Minimize convective heat transfer

    Keep pipes from freezing

    4230
    4.1303.2d
    Materials

    Insulation materials will be of minimal water absorbency and flame spread, and smoke-developed index for insulation will be in accordance with IRC

    Foam plastic insulation will comply with IRC

    Fasteners will be corrosion resistant

    Ensure durability

    Prevent moisture damage

    4231
    4.1303.2e
    Occupant education

    A dated receipt signed by the installer will be provided that includes:

  • Coverage area
  • Thickness
  • R-value
  • Document job completion to contract specifications

    Confirm amount of insulation installed

    Comply with 16 CFR 460.17

    4232

    4.1303.3 Insulation of Floor Cavity with Spray Foam Material

    Topic: 
    Floors
    Subtopic: 
    Manufactured Housing Floor Cavity Insulation
    Desired Outcome: 
    Installation of a consistent thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow between conditioned and unconditioned space that reduces heat flow

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1303.3a
    R-value

    Insulation will be installed in accordance with recommended R-value

    Insulate to prescribed R-value for the climate zone

    4233
    4.1303.3b
    Work assessment

    Ensure complete accessibility of floor cavity

    Ensure work area is clean, safe, and ready to accept insulation

    4234
    4.1303.3c
    Preparation

    All floor areas will be open and accessible for spray foam application

    Any openings in the subfloor larger than ¼" will be covered with appropriate materials

    Insulation dams or end blockers will be installed where needed

    All surfaces where spray foam is applied will be clean, dry, and free of contamination and degradation

    Substrate surfaces will be wiped, blown, or vacuumed to be free of excessive dust and dirt

    Grease and oil will be removed using appropriate cleaners or solvents

    Moisture content of all wood substrate materials will be below 19%; if tested at or above this percent of moisture, insulating the floor will be deferred until moisture level is corrected

    Clean floor cavities

    Remove all remnants of previous insulation and bottom board

    Prepare all substrate surfaces for the application of spray foam

    4235
    4.1303.3d
    Installation

    Insulation will be installed to prescribed R-value in accordance with manufacturer specifications

    In accordance with manufacturer specifications, spray foam will be applied to desired thickness using the maximum pass thickness onto subfloor between floor joists and all rim/band joists

    Rim/band joist will be sealed

    When desired, underside of joists will be covered with spray foam to provide a layer of continuous insulation

    Each cavity will be insulated to specified R-value

    Insulation must be in contact with subfloor

    Insulation will not have gaps or voids

    Ducts and water lines will be insulated for climate conditions

    Insulate and seal floors

    Eliminate voids

    Minimize conductive and convective heat transfer across the floor system

    Ensure durability

    4236
    4.1303.3e
    Materials

    Insulation will be installed in accordance with manufacturer specifications

    Flame spread index of selected materials will not exceed 25 with an accompanying smoke-developed index not to exceed 450 when tested in accordance with ASTM E 84 or UL 723

    Flame spread index of foam insulation will not exceed 75 and a smoke- developed index of no more than 450 when tested in the maximum thickness intended for use in accordance with ASTM E 84 or UL 723

    Foam insulation will be separated from the interior of the building by an approved thermal barrier at minimum 1/2" gypsum or a material that is tested in accordance with the acceptance criteria of both the Temperature Transmission Fire Test and the Integrity Fire Test of NFPA 275

    Ensure durability

    Ensure worker safety

    Ensure proper installation

    Fire safety will be maintained

    4237
    4.1303.3f
    Fire protection

    Spray foam will be separated from the occupied space of the building with a 15-minute thermal barrier (typically 15/32" sheathing, 1/2" gypsum board, or approved thermal barrier coating) or as approved by ASTM E84 requirements

    Spray foam designed to be used as a fire block does not require a thermal barrier installed prior to application

    Provide necessary fire protection for combustible spray foam insulation

    4238
    4.1303.3g
    Occupant education

    A dated receipt signed by the installer will be provided that includes:

  • Coverage area
  • Thickness
  • R-value
  • Document job completion to contract specifications

    Confirm amount of insulation installed

    Comply with 16 CFR 460.17

    4239

    4.1402.2 Basement Wall Insulation—No Groundwater Leakage

    Topic: 
    Basements and Crawl Spaces
    Subtopic: 
    Basements and Crawl Space Walls
    Desired Outcome: 
    Basement insulation improves thermal performance and ensures sufficient drying potential
    For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1402.2a
    R-value

    Regional IECC will be followed for required R-values

    Improve thermal performance of the basement and living space

    4240
    4.1402.2b
    Air barrier

    A continuous air barrier will be installed on the warm side of the insulation

    Prevent condensation on the basement wall

    4241
    4.1402.2c
    Vapor permeability


    When absorbent insulation materials are installed, assembly will remain vapor semi-impermeable to the interior in all climate zones except Zone 7 

    Provide drying potential to the basement

    4242

    4.1402.3 Basement Wall Insulation—Groundwater Leakage

    Topic: 
    Basements and Crawl Spaces
    Subtopic: 
    Basements and Crawl Space Walls
    Desired Outcome: 
    Basement insulation improves thermal performance and ensures sufficient drying potential
    For supporting material, see Calculation of the Infiltration Credit, Referenced Standards and Building America Solution Center.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1402.3a
    Drainage

    A continuous drainage plane at the interior surface of the exterior basement wall will be created from the top of the wall to a drainage field at the bottom of the wall or sub-slab

    Drainage field will be run to daylight or pumped to the outside

    Remove moisture on the surface of the exterior basement wall

    4243
    4.1402.3b
    Rough finish walls (e.g., rubble walls)

    Drainage plane will be replaced with a waterproof membrane

    Only a nonabsorbent insulation that complies with ASTM C665-06 will be applied

    Insulation will adhere to the waterproof membrane without voids

    Drainage field will be run to daylight or pumped to the outside

    Create an air and moisture barrier on the interior side of the exterior basement wall and allow the insulation to conform to the irregularity of the surface

    Improve thermal performance of the basement and the living space

    4244
    4.1402.3c
    Thermal barrier, insulation

    A nonabsorbent insulation will be used with a minimum expected service life of 10 years

    A fire-rated material will be used if the insulation is left exposed

    Improve thermal performance of the basement and the living space

    4245
    4.1402.3d
    Location

    Insulation will be installed continuously from the top of the band joist to the top of the slab

    Maintain a continuous thermal boundary on the interior side of the exterior basement wall

    4246
    4.1402.3e
    Termite protection

    Where termite pressure exists, if subslab drainage is installed, termite treatment will be performed before reinstalling the slab

    Provide termite protection

    4247
    4.1402.3f
    Insulation attachment

    Insulation will be attached with a durable connection equal to or better than the manufacturer specifications, whichever is more durable

    A minimum expected service life of 10 years will be ensured

    Secure thermal boundary without compromising the insulation

    4248
    4.1402.3g
    R-value

    Regional IECC will be followed for required R-value

    Improve thermal performance of the basement and living space

    4249
    4.1402.3h
    Sealing

    A continuous air barrier on the warm side of the thermal boundary will be installed, including floor-to-wall and wall-to-ceiling connections

    Prevent convective air leakage from the basement, through the drainage plane, and back into the basement

    4250
    4.1402.3i
    Finish wall requirements

    International Residential Code (IRC) will be followed for finished wall details in basements

    Install a durable, finished wall

    4251
    4.1402.3j
    Onsite documentation
    A dated receipt signed by the installer will be provided that includes:
    • Coverage area
    • Thickness
    • R-value

    Document job completion to contract specifications

    Confirm amount of insulation installed

    Comply with 16 CFR 460.17

    6821

    4.1488.1 Climate Considerations for Insulating Water Lines Located Between Bottom Board and Ground

    Topic: 
    Basements and Crawl Spaces
    Subtopic: 
    Special Considerations
    Desired Outcome: 
    Water supply line does not freeze in cold climates

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1488.1a
    Work assessment

    Installer prework assessment will be conducted to determine:

    • Water leaks do not exist
    • Accessibility

    Water leaks will be repaired before installation

    Verify scope of work

    Ensure that work space is safe and ready for work

    4252
    4.1488.1b
    Installation

    Pipe freeze protection system will have thermostatic heat control and circuit protection

    Insulation will be installed over pipe freeze protection system when necessary

    Pipe will be protected from wind

    Ensure fire safety

    Protect supply pipe from freezing

    4253
    4.1488.1c
    Occupant education

    Occupants will be educated on efficient and safe operation and maintenance of heat tape

    Ensure safe and durable protection of water line

    4254

    4.1601.3 Insulation and Vapor Barrier

    Topic: 
    Ducts
    Subtopic: 
    Insulating Ducts
    For supporting material, see Building America Solution Center.
    Desired Outcome: 
    Minimize condensation

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1601.3a
    Ducts in unconditioned spaces (e.g., crawl space, attic, unconditioned basements)

    Ducts will have continuous insulation and vapor barrier

    Insulation will be sufficient to prevent dew point on surface of ducts

    Minimize condensation

    4255
    4.1601.3b
    Ducts within floor assemblies

    Inspection and/or testing will be conducted to determine whether ducts are within thermal, pressure, and vapor boundary

    If ducts are within thermal, pressure, and vapor boundary, no action will be required

    If ducts are not within thermal, pressure, and vapor boundary, continuous air barrier, insulation, and vapor retarder will be installed either on the ducts or at the belly liner

    Minimize condensation

    4256
    4.1601.3c
    Exposed metal

    All exposed metal will have continuous insulation and vapor retarder

    Minimize condensation

    4257

    4.1601.4 Insulating Flex Ducts

    Topic: 
    Ducts
    Subtopic: 
    Insulating Ducts
    Desired Outcome: 
    Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Vapor barrier A material that retards the passage of water vapor and contains a perm rating of less than 1

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1601.4a
    Removal of existing flexible ducting

    All accessible low R-value flexible ducting will be removed from premises

    Ensure installation of proper R-value ducts

    4258
    4.1601.4b
    Selection of new flexible ducting

    All flexible ducting will have a minimum of R-8

    Minimize thermal conductance through the duct system

    4259
    4.1601.4c
    Sizing of new flex

    Duct-sizing procedures will be conducted when replacing flex duct

    Improve comfort in rooms

    Improve fan performance

    4260
    4.1601.4d
    Installation of flex

    Flex duct will be supported in accordance with flex duct manufacturer's directions or local codes

    Beaded rigid elbow or equivalent will be installed in duct runs whenever change in direction is required

    Prevent sags, drops, or other bends that may interfere with correct air flow

    Maintain duct diameter around the turns

    Maximize air flow and distribution

    4261
    4.1601.4e
    Interior liner attachment

    Interior liner of the flex-to-metal connection will be fastened with tie bands using a tie band tensioning tool

    For oval flexible duct-to-metal connections, tie bands cannot be used; appropriate mechanical fasteners will be used

    Create a strong, secure attachment

    4262
    4.1601.4f
    Sealing of interior liner

    UL 181 B-M-listed mastic product will be used to seal the connection

    Create an airtight connection

    4263
    4.1601.4g
    Attachment of exterior liner

    Liner will be pulled up onto the metal duct as far as possible before securing

    The exterior liner of the flex duct will be fastened with tie bands using a tie band tensioning tool

    Create a strong, durable attachment

    4264
    4.1601.4h
    Sealing of all accessible ducts

    All accessible joints, seams, and connections will be sealed with UL 181 approved mastics

    Minimize duct leakage

    4265
    4.1601.4i
    Insulation of all fittings

    All metal fittings, including boots, elbows, and takeoffs, will be insulated separately using a minimum of R-8 duct wrap with a vapor barrier mechanically fastened (e.g., stitch staples, tie bands) and sealed with no exposed metal

    Minimize thermal conductance of the duct system

    Minimize condensation

    4266
    4.1601.4j
    Completeness of vapor barrier

    Vapor barrier of all duct insulation will be taped to the flex duct using the taping system required by the manufacturer of the duct insulation

    Vapor barrier will be sealed to the belly liner

    Ensure a complete vapor barrier

    4267
    4.1601.4k
    Vermin proofing

    Vermin access points will be identified and treated appropriately (e.g., seal access holes)

    Ensure long-term durability of the building materials

    4268
    4.1601.4l
    CAZ testing

    CAZ testing will be performed where combustion appliances are utilized

    Identify unsafe equipment operating conditions

    4269

    4.1601.5 Insulating Metal Ducts

    Topic: 
    Ducts
    Subtopic: 
    Insulating Ducts
    Desired Outcome: 
    Lowered thermal conductance of duct system and minimized condensation on the duct system

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    4.1601.5a
    Selection of duct insulation material

    Duct insulation will be a minimum of R-8, in accordance with local code or buried under attic insulation, whichever is a greater R-value, and have an attached and continuous vapor barrier

    Hot humid and warm coastal regions will not bury ducts

    Decrease heat loss and condensation problems

    4270
    4.1601.5b
    Duct sealing

    All accessible ducts will be sealed with a UL-181 mastic before insulation is applied

    Minimize duct leakage

    4271
    4.1601.5c
    Attachment of duct insulation

    Duct insulation will be mechanically fastened (e.g., stitch staples, tie bands) and sealed with no exposed metal

    Duct insulation will be secured to the duct system using metal wire or rot-proof nylon twine

    Pattern of the wire or twine will be sufficient to securely hold the duct insulation tight to the duct

    Mechanical fastening will be sufficient to securely hold the duct insulation in place and tight to the duct

    Ensure a secure connection between the duct system and the duct insulation

    Ensure performance of the installed material

    Minimize condensation

    4272
    4.1601.5d
    Taping of the vapor barrier

    Using a tape approved by the manufacturer, all seams and connection of the vapor barrier will be taped so that no metal is exposed

    No gaps will exist between pieces of duct insulation

    Prevent gaps in the vapor barrier of the insulation

    4273
    4.1601.5e
    Vermin proofing

    Vermin access points will be identified and treated appropriately (e.g., seal access holes)

    Ensure long-term durability of the building materials

    4274

    Section 5:Heating and Cooling

    5.3001.1 Load Calculation and Equipment Selection

    Topic: 
    Forced Air
    Subtopic: 
    Design
    Desired Outcome: 
    Equipment sized properly and operates efficiently
    For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    5.3001.1a
    Load calculation

    Load calculation will be performed in accordance with ANSI/ACCA 2 Manual J (Residential Load Calculation) and manufacturer specifications

    Properly size equipment for load

    2222
    5.3001.1b
    Equipment selection

    Equipment selection will be performed in accordance with ANSI/ACCA Manual S and manufacturer specifications

    Ensure equipment is able to heat, cool, and dehumidify the house

    2223
    5.3001.1c
    Air filtration

    New central forced air HVAC systems will have minimum MERV 6 filtration with no air bypass around the filters

    Particle removal to protect equipment and help maintain indoor air quality

    2224

    5.3001.3 Replace Return Air Systems that Incorporate Floor Cavity (Belly) and/or Attic as the Return Air Pathway

    Topic: 
    Forced Air
    Subtopic: 
    Design
    For supporting material, see Building America Solution Center.
    Desired Outcome: 
    Effective, efficient, safe, and durable return air system

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    5.3001.3a
    Close return air openings

    Existing return air openings will be closed off and sealed with a durable material equivalent in strength to the surrounding material

    Disturbed materials suspected to contain asbestos or lead content will be assessed and removed in accordance with EPA regulations

    Minimize air leakage

    Improve indoor environmental quality

    Ensure safe and legal renovation

    3473
    5.3001.3b
    Alternate return air system

    Alternate return air opening will be provided to the furnace closet (e.g., replace louvered door or install grilles); whenever possible, follow manufacturer specifications for amount needed

    Return duct design will be in accordance with ANSI/ACCA 1 Manual D Residential Duct Systems

    A continuous and adequate return air pathway to the air handler will be installed

    Ensure sufficient return air is provided to the system

    3474
    5.3001.3c
    Zone pressure test

    Pressures will be measured with the furnace fan operating across interior doors that can be closed and have a supply and/or return behind them

    Rooms should not exceed 3 pascals of pressure

    Pressure testing will be performed with all interior doors closed and the air handler running

    Ensure sufficient return air is provided to the system

    Minimize moisture intrusion from negative pressures

    Improve indoor air quality

    3475
    5.3001.3d
    Combustion Appliance Zone (CAZ) testing

    CAZ testing will be performed where combustion appliances are utilized

    Identify unsafe equipment operating conditions

    3476
    5.3001.3e
    Occupant education

    Occupant will be educated on changes, how to operate and maintain the system, and any potential health concerns (e.g., lead, asbestos)

    Ensure occupant is educated

    3477

    5.3003.1 Data Plate Verification

    Topic: 
    Forced Air
    Subtopic: 
    System Assessment and Maintenance
    Desired Outcome: 
    Data for commissioning and future service work is recorded

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    5.3003.1a
    Data plate verification

    Equipment will be visually inspected

    Information will be recorded from the equipment data plates indoors and outdoors where available

    Ensure technician has equipment data necessary for commissioning and future service work

    2233

    5.3003.11 Heating and Cooling Controls

    Topic: 
    Forced Air
    Subtopic: 
    System Assessment and Maintenance
    Desired Outcome: 
    Heating and cooling controls installed and set properly

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    5.3003.11a
    Removal of mercury- based thermostats

    Mercury-based thermostat will be removed safely and disposed of in accordance with EPA regulations

    Protect workers and occupants from injury

    Protect environment from damage

    3924
    5.3003.11b
    Removal of existing controls

    Existing controls will be removed in accordance with EPA lead safe work rules

    Protect workers and occupants from injury

    Protect environment from damage

    3925
    5.3003.11c
    Penetrations

    Penetrations for control wiring will be sealed with a durable sealant (e.g., caulk, silicone, foam) at both the interior (e.g., floor, sheetrock) and exterior air barriers (e.g., bottom liner, side walls)

    Ensure controls operate as designed

    Minimize infiltration and exfiltration from house

    3926
    5.3003.11d
    Thermostat location

    Thermostats will be installed to reflect the temperature of the zone in which they are installed

    Mounting location for air leakage and conductance that would affect the thermostat operation (e.g., marriage walls, exterior walls) will be accessed

    Thermostats will not be exposed to extreme temperatures, radiant heat sources, and drafts

    Ensure controls operate as designed

    3927
    5.3003.11e
    Blower speed

    Blower speed will be set for equipment in accordance with manufacturer specifications

    Ensure equipment has correct air flow

    3929
    5.3003.11f
    Thermostat selection: heat pump

    A thermostat with supplementary heat lockout that can interface with an outdoor temperature sensor will be selected

    Ensure supplementary heater operation is prevented when the heat pump is capable of meeting the load

    3931
    5.3003.11g
    Heat pump: supplementary heat

    Supplementary heat lockout on air-to-air heat pumps will be set to the economical balance point

    ANSI/ACCA 3 Manual S Residential Equipment Selection will be referenced for set points when using different types of heat pumps

    Ensure supplementary heater operation is prevented when the heat pump is capable of meeting the load

    3933
    5.3003.11h
    Heat pump: low ambient compressor lockout

    For air-to-air heat pumps, low ambient compressor lockout will be set to 0°F outdoor temperature or ambient compressor lockout will be disabled

    ANSI/ACCA 3 Manual S Residential Equipment Selection will be referenced for low ambient compressor lockout when using different types of heat pumps

    Ensure supplementary heater operation is prevented when the heat pump is capable of meeting the load

    3935
    5.3003.11i
    Heat pump: outside temperature sensor

    An outdoor temperature sensor will be installed in accordance with manufacturer specifications

    Ensure equipment operates as designed

    3937
    5.3003.11j
    Heat pump: supplementary heat wiring

    Supplementary heat will be wired onto second stage heating terminal in accordance with manufacturer specifications

    Do not operate supplementary heat in stage one heating

    3939
    5.3003.11k
    Thermostat: installer programming

    The installer options will be set to match the thermostat to the equipment and control board settings

    Ensure equipment operates as designed

    3941
    5.3003.11l
    Time delay settings

    Time delay for equipment will be set in accordance with manufacturer specifications and as appropriate for the climate zone (e.g., no time delay for hot humid climates)

    Maximize transfer of heat without adversely affecting indoor humidity levels

    3943
    5.3003.11m
    Humidistat: location

    Humidistat will be installed to reflect humidity of the zone in which it is installed

    Humidistat will be installed in a dry location

    Ensure controls operate as designed

    3944
    5.3003.11n
    Ventilation control

    Ventilation controls will be connected to operational control system, as originally designed in the factory

    Powered ventilation system alarm will be set to "on;" controls will be reset to factory settings

    Ensure proper operation of the mechanically dampered and powered ventilation systems

    3945
    5.3003.11o
    Occupant education

    Occupants will be educated on proper use of thermostat, including:

    • Proper use of setbacks for air conditioners and heat pumps
    • Allowing occupant comfort to determine setback for combustion heating appliances
    • Using emergency heat appropriately
    • Educate property manager/occupant about fan on/auto or vent/auto operations
    • Educate the property manager/occupant about ventilation, as it applies to controls
    • Instruct the property manager/occupant to never leave the fan set to "on" or "vent" in humid climates
    • Educate property manager/occupant about possible moisture problems when thermostat is set low for extended periods of time during the summer

    Ensure equipment and controls operate as designed

    Provide comfort throughout house

    Ensure property manager/occupant knows how to operate the system

    Minimize moisture problems

    3947

    5.3003.12 Package Units—Repair and Service

    Topic: 
    Forced Air
    Subtopic: 
    System Assessment and Maintenance
    Desired Outcome: 
    Maximize efficiency and performance of existing system, when required by the authority having jurisdiction

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    5.3003.12a
    Work assessment

    Assessment will be performed to identify problems with air, refrigerant, electrical, load, safety, indoor environmental quality (IEQ), and/or other needed repairs

    If new installation or replacement is necessary, ACCA Manual J, Manual S, and/or Manual D will be referenced to determine if the existing duct system is adequate for the sizing of the furnace, and the procedures outlined in ANSI/ACCA 5 QI HVAC Quality Installation Specification will be followed

    Determine the scope of repair, service, and level of expertise required to perform the work

    3950
    5.3003.12b
    Remove existing system components

    Nonsalvageable components and waste will be removed and disposed of properly

    Refrigerant will be removed in accordance with EPA requirements

    Prepare for installation of new equipment or components

    Ensure environmental and legal compliance

    3952
    5.3003.12c
    Repairs

    Repairs will be performed by qualified specialist as identified in the assessment

    Maintenance will be done in accordance with ANSI/ACCA 4

    Maintenance of Residential HVAC Systems and ANSI/ACCA 6 HVAC System Cleanliness

    Optimize performance of the system

    3953
    5.3003.12d
    Service existing components

    Service will be performed by qualified personnel as identified in the assessment

    Maintenance will be done in accordance with ANSI/ACCA 4

    Maintenance of Residential HVAC Systems and ANSI/ACCA 6 HVAC System Cleanliness

    Optimize performance of the system

    3954
    5.3003.12e
    Commissioning

    Equipment will be fully tested for proper operation following procedures outlined in ANSI/ACCA 5 QI

    Property manager/occupant will be educated on how to operate and maintain system, including thermostat operation and system changes

    Ensure proper system operation

    Ensure property manager/occupant is educated

    3955

    5.3003.13 Refrigerant Charge Evaluation

    Topic: 
    Forced Air
    Subtopic: 
    System Assessment and Maintenance
    Desired Outcome: 
    Properly charged system

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    5.3003.13a
    Prerequisite

    Leak detection, air flow, and refrigerant line inspection will be checked and repaired to determine need for refrigerant charge

    Eliminate possible sources of other problems before addressing refrigerant charging

    3958
    5.3003.13b
    Qualified contractor

    Charge will be tested and work performed by a qualified contractor

    Refrigerant charge will be in accordance with ANSI/ACCA 5 QI HVAC Quality Installation Specification refrigerant charging requirements for mixed humid, hot humid, marine, and hot dry climates

    Ensure compliance with codes and environmental regulations

    Ensure proper equipment charge

    3959
    5.3003.13c
    Documentation

    Contractor will provide documentation of work performed

    Maintain record of work performed

    3960
    5.3003.13d
    Quality assurance

    External static pressure will be measured and documented

    EPA refrigerant charge log will be provided

    Ensure external static pressure is within range in accordance with manufacturer specifications

    Ensure quality workmanship

    3961

    5.3003.14 Combustion Analysis of Gas-Fired Appliances (LP and Natural Gas)

    Topic: 
    Forced Air
    Subtopic: 
    System Assessment and Maintenance
    For supporting material, see Building America Solution Center.
    Desired Outcome: 
    Analysis of critical components and operations completed in accordance with industry and manufacturer specifications

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    5.3003.14a
    Gas Pressure

    Measurement will be verified by a certified professional in accordance with fuel type and manufacturer specifications

    Ensure equipment:

    • Operates as designed
    • Operates safely
    • Operates efficiently
    • Is durable
    3967
    5.3003.14b
    Place appliance in operation

    Heating equipment will be placed in operation in accordance with applicable NFPA standards and manufacturer specifications when available

    Ensure equipment:

    • Operates as designed
    • Operates safely
    • Operates efficiently
    • Is durable
    3970
    5.3003.14c
    Carbon dioxide (CO2)and oxygen (O2)

    Measurement will be verified in accordance with industry manuals (e.g., Testo, Bacharach)

    Ensure equipment:

    • Operates as designed
    • Operates safely
    • Operates efficiently
    • Is durable
    3971
    5.3003.14d
    Carbon monoxide (CO) in flue gas

    CO in the undiluted flue gas will be less than 400 ppm air-free

    Ensure equipment:

    • Operates as designed
    • Operates safely
    • Operates efficiently
    • Is durable
    3972
    5.3003.14e
    Testing/inspection holes

    All testing and inspection holes will be sealed with manufacturer approved materials

    Ensure equipment:

    • Operates as designed
    • Operates safely
    • Operates efficiently
    • Is durable
    6957

    5.3003.15 Combustion Analysis of Oil-Fired Appliances

    Topic: 
    Forced Air
    Subtopic: 
    System Assessment and Maintenance
    Desired Outcome: 
    Analysis of critical components and operations completed to industry and manufacturer specifications

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    5.3003.15a
    Oil system: smoke test

    Smoke test will be conducted before any combustion testing is completed

    Smoke spot reading will be in accordance with burner manufacturer specifications

    Ensure equipment:

    • Operates as designed
    • Operates safely
    • Operates efficiently
    • Is durable
    2951
    5.3003.15c
    Oil filter

    Filter will be present, clean, and leak free

    Ensure equipment:

    • Operates as designed
    • Operates safely
    • Operates efficiently
    • Is durable
    2953
    5.3003.15d
    Fuel pressure

    Measurement will be verified in accordance with manufacturer specifications

    Ensure equipment:

    • Operates as designed
    • Operates safely
    • Operates efficiently
    • Is durable
    2954
    5.3003.15e
    Oil system: steady state efficiency (SSE)

    Measurement will be verified in accordance with manufacturer specifications

    Ensure equipment:

    • Operates as designed
    • Operates safely
    • Operates efficiently
    • Is durable
    2955
    5.3003.15f
    Net stack temperature

    Net stack temperature will be measured and verified in accordance with manufacturer specifications

    Ensure equipment:

    • Operates as designed
    • Operates safely
    • Operates efficiently
    • Is durable
    2956
    5.3003.15g
    Carbon dioxide (CO2)and oxygen (O2)

    Measurement will be verified in accordance with industry manuals (e.g., Testo, Bacharach)

    Ensure equipment:

    • Operates as designed
    • Operates safely
    • Operates efficiently
    • Is durable
    2957
    5.3003.15h
    Excess combustion air

    Excess air will be minimized in accordance with industry best practices 

    Ensure equipment:

    • Operates as designed
    • Operates safely
    • Operates efficiently
    • Is durable
    2958
    5.3003.15i
    CO in flue gas

    CO  in the undiluted flue gas will be less than 400 ppm air-free

    Ensure equipment:

    • Operates as designed
    • Operates safely
    • Operates efficiently
    • Is durable
    2959
    5.3003.15j
    Testing/inspection holes

    All testing and inspection holes will be sealed as approved by the authority having jurisdiction

    Ensure equipment:

    • Operates as designed
    • Operates safely
    • Operates efficiently
    • Is durable
    2960

    5.3003.16 Evaluating Electrical Service

    Topic: 
    Forced Air
    Subtopic: 
    System Assessment and Maintenance
    Desired Outcome: 
    Electrical components properly tested

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    5.3003.16a
    Service entrance

    Homes will have a four-wire service entrance to the panel box to ensure a wiring system that is nominally rated at 120/240 volts and allows for proper grounding

    Grounding at the service entrance will be checked to determine proper grounding of the home

    Ensure occupant and worker safety

    2961
    5.3003.16b
    Polarity

    Polarity of equipment will be verified by a qualified technician if wiring is to be modified or repaired

    Ensure equipment:

    • Operates as designed
    • Operates safely
    2962
    5.3003.16c
    Voltage: incoming power

    Voltage will be in accordance with manufacturer specifications

    Ensure equipment operates as designed

    2963
    5.3003.16d
    Voltage: contactor

    Voltage drop will be within acceptable range in accordance with manufacturer specifications

    Ensure contactor does not overheat

    Ensure equipment operates as designed

    2964
    5.3003.16e
    Grounding

    Grounding will be connected in compliance with local code requirements, ANSI/NEMA GR 1-2007, and NFPA 70 National Electric Code

    Frames of home sections will be bonded with copper wire

    Bonding lug will be selected to prevent corrosion due to dissimilar metals

    Ensure equipment:

    • Operates as designed
    • Operates safely

    Ensure ground continuity among sections

    2965
    5.3003.16f
    Blower amperage

    Amperage will not exceed manufacturer full load amperage

    Ensure equipment:

    • Operates as designed
    • Operates efficiently
    • Operates safely
    2966
    5.3003.16g
    Compressor amperage

    Amperage will not exceed manufacturer full load amperage

    Ensure equipment:

    • Operates as designed
    • Operates efficiently
    • Operates safely
    2967
    5.3003.16h
    Door switch operation

    Blower compartment safety switch operation will be verified, if present

    Ensure blower:

    • Does not operate during service
    • Cannot backdraft a flue when the door is off
    2968
    5.3003.16i
    Heat pump: emergency heat

    Emergency heat circuit functions will be verified

    Ensure system delivers heat in case of compressor failure

    2969

    5.3003.2 Combustion Analysis of Oil-Fired Appliances

    Topic: 
    Forced Air
    Subtopic: 
    System Assessment and Maintenance
    Desired Outcome: 

    Analysis on critical components and operations completed in accordance with industry and manufacturer specifications to ensure equipment operates as designed, safely, efficiently and is durable.

    Note: 
    The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detailIf new installation or replacement is necessary, ANSI / ACCA 5 QI HVAC Quality Installation Specification will be followed
    For supporting material, see Calculation of the Infiltration Credit, Referenced Standards and Building America Solution Center.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    5.3003.2a
    Oil system: filter

    Filter will be present, clean, and leak free

    Ensure oil filter is present and functional

    2234
    5.3003.2b
    Nozzle

    Nozzle size, angle, and spray pattern will be correct for design input and within equipment firing rate of the heating system manufacturer. Position of nozzle and electrodes will be in accordance with manufacturer specifications

    Ensure equipment is outfitted with the correct nozzle per manufacturer guidelines

    2235
    5.3003.2c
    Fuel pressure

    Measurement will be verified in accordance with manufacturer specifications

    Ensure correct oil pump pressure for nozzle installed and at OEM’s specified values per ACCA

    2236
    5.3003.2d
    Place appliance in operation

    Heating equipment will be placed in operation in accordance with applicable standards and manufacturer specifications when available

    Prepare equipment for combustion analysis tests

    2237
    5.3003.2e
    Smoke Test

    Smoke test will be conducted before any combustion testing is completed

    Smoke spot reading will be in accordance with burner manufacturer specifications

    If smoke test is more than actionable levels, specify a clean and tune

    Determine whether equipment is operating within acceptable range according to smoke test and call for action if needed

    2238
    5.3003.2f
    Steady state efficiency (SSE )

    Measurement will be verified in accordance with manufacturer specifications

    Determine whether steady state efficiency is within manufacturer range

    2239
    5.3003.2g
    Net stack temperature

    Net stack temperature will be measured and verified in accordance with manufacturer specifications

    Determine whether net stack temperature is within manufacturer’s recommended range

    2240
    5.3003.2h
    Carbon dioxide (CO2) and oxygen (O2)

    Measurement will be verified in accordance with manufacturer specifications

    Verify combustion performance of equipment is within manufacturer recommended range based on CO2 and O2 readings

    2241
    5.3003.2i
    Excess combustion air

    Excess combustion air will be calculated and shown to be in accordance with manufacturer specifications

    Verify combustion performance of equipment is within manufacturer recommended range based on excess combustion air readings

    6969
    5.3003.2j
    CO in flue gas

    Measure CO and recommend actions to ensure that CO in the undiluted flue gas will be less than 400 ppm air-free

    Ensure CO in undiluted flue gas is less than 400 ppm air-free

    6970
    5.3003.2k
    Testing/inspection holes

    All testing and inspection holes will be sealed with approved materials

    Ensure equipment:

    • Operates as designed
    • Operates safely
    • Operates efficiently
    • Is durable
    6971

    5.3003.3 Evaluating Air Flow

    Topic: 
    Forced Air
    Subtopic: 
    System Assessment and Maintenance
    Desired Outcome: 
    Air flow is properly tested
    Note: 
    The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    5.3003.3a
    Total air flow

    Total system air flow will be measured by one of the following methods:

    • Temperature rise
    • Flow plate
    • Fan depressurization device(e.g., Duct Blaster®, DucTester®)

    Ensure equipment:

    • Operates as designed
    • Operates efficiently
    • Provides comfort
    • Operates safely
    • Is durable
    3879
    5.3003.3b
    External static pressure

    External static pressure will be in accordance with manufacturer specifications

    Ensure equipment:

    • Operates as designed
    • Operates efficiently
    • Provides comfort
    • Operates safely
    • Is durable
    3880
    5.3003.3c
    Pressure

    Pressure drop across cooling coils will be in accordance with manufacturer specifications

    Ensure equipment:

    • Operates as designed
    • Operates efficiently
    • Provides comfort
    • Operates safely
    • Is durable
    3881
    5.3003.3d
    Filter Inspection

    Visual inspection to verify filter type is per manufacturer specifications, and is clean

    Ensure equipment:

    • Operates as designed
    • Operates efficiently
    • Provides comfort
    • Operates safely
    • Is durable
    3882
    5.3003.3e
    Balancing room flow: new ductwork

    Proper air flow delivery to each room will be ensured by one of the following: 

    Measuring air flow at each register

    OR

    Measuring heat rise, room pressures, and interviewing residents to ensure their comfort. 

    Ensure equipment:

    • Operates as designed
    • Operates efficiently
    • Provides comfort
    • Operates safely
    • Is durable
    3883
    5.3003.3f
    Supply wet bulb and dry bulb

    Supply and return wet bulb (wet bulb temperature is measured for cooling systems only) and dry bulb air temperatures will be recorded

    Ensure equipment:

    • Operates as designed
    • Operates efficiently
    • Provides comfort
    • Operates safely
    • Is durable
    3884
    5.3003.3h
    Temperature rise: gas and oil furnaces only

    Temperature rise between the supply and return will be in accordance with manufacturer specifications

    Ensure equipment:

    • Operates as designed
    • Operates efficiently
    • Provides comfort
    • Operates safely
    • Is durable
    3886

    5.3003.5 Refrigerant Line Inspection

    Topic: 
    Forced Air
    Subtopic: 
    System Assessment and Maintenance
    Desired Outcome: 
    Refrigerant lines properly installed
    Note: 
    The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
    For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    5.3003.5a
    Insulation

     All suction or vapor refrigerant lines, will be insulated to a minimum of R-4

    High-side or liquid refrigerant lines will not be insulated unless specified by the equipment's manufacturer

    Ensure refrigerant lines do not gain excessive heat, or cause condensation to occur inside the building envelope

    2258
    5.3003.5b
    Ultraviolet (UV) protection of insulation

    If exposed to sunlight, refrigerant line insulation will be protected from UV degradation in accordance with manufacturer specifications, IRC or local code

    Install insulation so it does not degrade

    3888
    5.3003.5c
    Sizing

    Refrigerant lines will be sized to meet manufacturer specifications for the installed equipment

    Ensure system moves appropriate volume of refrigerant

    3890
    5.3003.5d
    Installation quality

    Refrigerant lines will be installed without kinks, crimps, or excessive bends

    Ensure system moves appropriate volume of refrigerant

    3892
    5.3003.5e
    Support

    Refrigerant lines will be routed, supported, and secured to house in a manner that protects the line from damage by workers or occupants

    Ensure refrigerant lines do not move, vibrate, or sag

    Protect lines from damage

    3894

    5.3003.6 Evaluating Sequence of Operation

    Topic: 
    Forced Air
    Subtopic: 
    System Assessment and Maintenance
    Desired Outcome: 
    Sequence of operation of the system verified

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    5.3003.6a
    Verification

    The sequence of operation of the system will be verified in accordance with the manufacturer installation, operation, and maintenance manual. If every effort to secure the manufacturer's manual proves unsuccessful, the technician will rely on standard industry testing protocols.

    Ensure system components function and operate in the correct sequence

    2263

    5.3003.7 Occupant Education

    Topic: 
    Forced Air
    Subtopic: 
    System Assessment and Maintenance
    Desired Outcome: 
    Occupants understand their role and responsibility in the safe, effective, and efficient operation of the equipment
    For supporting material, see Calculation of the Infiltration Credit, Referenced Standards and Building America Solution Center.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    5.3003.7a
    Basic operation

    Basic operation of the equipment will be explained to the occupant (e.g., design conditions, efficiency measures, differences from previous system or situation)

    Ensure occupant has a reasonable expectation of the equipment's capability

    3907
    5.3003.7b
    System controls (e.g., thermostat, humidistat)

    Proper operation and programming of system controls to achieve temperature and humidity control will be explained to the occupant

    Ensure occupant can operate system controls

    3908
    5.3003.7c
    System disconnects

    Indoor and outdoor electrical disconnects and fuel shut-offs will be demonstrated to occupant

    Ensure occupant can shut off equipment in emergencies

    3909
    5.3003.7d
    Combustion air inlets

    Location of combustion air inlets will be identified for occupant in accordance with NFPA 31, 54, and 58

    Importance of not blocking inlets will be explained to occupant

    Ensure occupant does not block combustion air inlets

    3910
    5.3003.7e
    Blocking air flow

    Importance of cleaning dust and debris from return grilles will be explained to occupant

    Proper placement of interior furnishings with respect to registers will be explained to occupant

    Negative consequences of closing registers will be explained to occupant

    Importance of leaving interior doors open as much as possible will be explained to occupant

    Ensure occupant does not prevent equipment from operating as designed

    3911
    5.3003.7f
    Routine maintenance

    Proper filter selection and how to change the filter will be explained to occupant

    Importance of keeping outside unit clear of debris, vegetation, decks, and other blockage will be explained to occupant

    Importance and timing of routine professional maintenance will be explained to occupant

    Ensure equipment operates as designed

    3913
    5.3003.7g
    Calling heating, ventilation, and air conditioning (HVAC) contractor

    Situations when the occupant should contact the HVAC contractor will be explained, including:

    • Fuel odors
    • Water draining from secondary drain line
    • Emergency heat indicator always on for a heat pump system
    • System blowing cold air during heating season and vice versa
    • Icing of the evaporator coil during cooling mode
    • Outside unit never defrosts
    • Unusual noises
    • Unusual odors

    Notify occupant to contact installer when system is not operating as designed

    3915
    5.3003.7h
    Carbon monoxide (CO)

    A carbon monoxide (CO) alarm will be installed

    Occupant will be made aware of operation of CO alarm

    3917
    5.3003.7i
    Warranty and service

    Occupant will be provided with relevant manuals and warranties

    The labor warranty will be explained and the occupant will be given a phone number to call for warranty service

    Provide manuals and warranties for future servicing

    3919

    5.3003.8 Evaporative Cooler Maintenance and Repairs

    Topic: 
    Forced Air
    Subtopic: 
    System Assessment and Maintenance
    Desired Outcome: 
    Evaporative cooler evaluated and maintained as needed
    For supporting material, see Referenced Standards and Calculation of the Infiltration Credit.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    5.3003.8a
    Assessment and diagnosis

    The following system elements will be assessed:

    • Pump
    • Pan
    • Spider
    • Float
    • Damper
    • Roof jack support
    • Water line
    • Water valve
    • Electrical
    • Pads
    • Motor
    • Fan

    Elements will be repaired or replaced as needed in accordance with manufacturer instructions

    Ensure all components function properly

    3921
    5.3003.8b
    Repair and maintenance

    Calcium deposits will be removed

    Pads will be replaced

    Any additional repairs or replacements will be made as necessary in accordance with manufacturer's instructions

    Protect the potable water supply from cross-contamination

    Ensure evaporative cooler functions properly

    3922
    5.3003.8c
    Occupant education

    A regular service schedule will be recommended to occupant

    Issues regarding multiple systems running will be discussed with occupant

    Ensure the occupant understands basic operation and the importance of regular maintenance

    3923

    5.3201.1 Indigenous Shading

    Topic: 
    Shading
    Subtopic: 
    Landscaping
    Desired Outcome: 
    Heat gain and loss reduced through use of indigenous plants

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    5.3201.1a
    Plant selection

    All plants intended for shading will be indigenous and drought resistant

    Ensure plantings survive in local conditions using a minimum amount of water

    2970
    5.3201.1b
    Plant size

    No plant will be chosen that will grow to a height that would cause damage to the home if it or any part of it fell on the home

    Reduce possibility of damage to the house

    2971

    5.3202.1 Reflective Coatings on Metal Roofs

    Topic: 
    Shading
    Subtopic: 
    Reflective Roofs
    Desired Outcome: 
    Reduce solar heat gain for manufactured homes

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    5.3202.1a
    Assessment

    Existing roof coating will be assessed for hazardous material

    Ensure worker and occupant safety

    2972
    5.3202.1b
    Preparation

    Roof will be stripped of all debris, algae, and peeled and loose coating

    Repairs to roof and penetrations will be made before application

    Ensure roof is clean, dry, and structurally sound for proper adhesion of new coating

    2973
    5.3202.1c
    Materials selection

    Material will be approved for application to metal and existing roof coating

    Material will be an ENERGY STAR qualified reflective coating

    Roof coating will be durable, flexible, reflective, and meet ASTM D412, ASTM D1737, and UL 790 Class A

    Provide proper reflective coating

    2974
    5.3202.1d
    Application

    Roof-coating material will be applied in accordance with manufacturer specifications

    Ensure proper application

    2975
    5.3202.1e
    Occupant education

    Occupant will be educated on the maintenance of reflective coating per manufacturer specifications, including annual inspection and cleaning

    Preserve integrity and effectiveness of reflective coating

    2976

    Section 6:Ventilation

    6.6002.3 Exhaust-Only Ventilation—Fan Intake Grille Location

    Topic: 
    Exhaust
    Subtopic: 
    Components
    Desired Outcome: 
    Exhaust grille location optimizes either primary or local ventilation

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    6.6002.3a
    Primary whole house ventilation

    Fan intake grille will be installed in a central location within the main body of the house

    Ensure it is accessible for filter change and cleaning

    Provide whole house air exchange

    2977
    6.6002.3b
    Local ventilation

    Fan intake grille will be installed in the space where odor, moisture vapor, or other contaminants are generated

    Remove contaminated air at the source

    2978

    6.6002.4 Ducts (Exhaust Fans)

    Topic: 
    Exhaust
    Subtopic: 
    Components
    Desired Outcome: 
    Installed ducts effectively move the required volume of air and prevent condensation

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    6.6002.4a
    Duct design and configuration

    Consideration will be given to:

    • Vent termination location
    • Amount of space for duct run
    • Roof condition, type, and access (e.g., metal, shingle, bow string, flat)
    • Duct insulation

    When applicable, pitch duct to remove condensation to outdoors

    Ducts will be as straight as possible, fully extended, and have the shortest run possible

    Turns will be made so the radius at the centerline is no less than one duct diameter

    Duct diameter will be equal to or greater than the exhaust fan outlet

    Fan flow will be verified by flow measurement to meet ASHRAE Standard 62.2

    Effectively move the required volume of air

    2979
    6.6002.4b
    Duct insulation

    Ducts installed outside of the thermal envelope will be insulated to a minimum of R-8 or in accordance with local codes

    Prevent condensation from forming or collecting inside or outside of the ductwork

    2980
    6.6002.4c
    Duct support

    Horizontal runs will be supported in accordance with flex duct manufacturer specifications and local codes

    Supports with a width of at least 1 ½" will be used or adequate metal support

    Effectively move the required volume of air

    Preserve the integrity of the duct system

    2981
    6.6002.4d
    Duct connections

    Metal-to-metal or metal-to-PVC connections will be fastened with a minimum of three equally spaced screws

    Flexible duct-to-metal or flexible duct-to-PVC connections will be fastened with tie bands using a tie band tensioning tool

    PVC-to-PVC connections will be fastened with approved PVC cement

    Other specialized duct fittings will be fastened in accordance with manufacturer specifications

    In addition to mechanical fasteners, duct connections will be sealed with UL 181B or 181B-M listed material

    Effectively move the required volume of air

    Preserve the integrity of the duct system

    2982
    6.6002.4e
    Duct materials

    Flexible materials will be UL 181 listed or Air Diffusion Council approved

    Rigid, smooth metal of 30-gauge wall thickness or thicker will be used

    PVC material may be used

    Effectively move the required volume of air

    Preserve the integrity of the duct system

    2983
    6.6002.4f
    Total exhaust airflow

    Total exhaust system ventilation airflow will be measured

    Ensure air flow is as designed

    2984

    6.6003.1 Surface-Mounted Ducted

    Topic: 
    Exhaust
    Subtopic: 
    Fans
    Desired Outcome: 
    Surface-mounted ducted fans installed to specification
    Note: 
    The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
    For supporting material, see Referenced Standards, Calculation of the Infiltration Credit and Building America Solution Center.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    6.6003.1a
    Hole through interior surface

    A hole no greater than a 1/4" greater than the assembly will be cut to accommodate fan assembly

    Minimize repair work

    Ensure a secure installation

    2985
    6.6003.1b
    Wiring

    Wiring will be installed by a properly licensed contractor, as required by the authority having jurisdiction

    Wiring will be installed in accordance with original equipment manufacturer specifications, and local and national electrical and mechanical codes

    Prevent an electrical hazard

    2986
    6.6003.1c
    Fan mounting

    Fan outlet will be oriented toward the final termination location

    Fan will be oriented so the equivalent length of the duct run is as short as possible

    Fan will be mounted securely in accordance with manufacturer specifications

    Ensure short duct run to achieve optimum air flow

    Ensure a secure installation

    Ensure fan housing does not shake, rattle, or hum when operating

    2987
    6.6003.1d
    Backdraft damper

    A backdraft damper will be installed between the outlet side of the fan and the exterior

    Prevent reverse air flow when the fan is off

    2988
    6.6003.1e
    Duct-to-fan connection

    Duct-to-fan outlet will be connected and sealed as follows:

    • Round metal-to-metal or metal-to-PVC connections will be fastened with a minimum of three equally spaced screws
    • Other metal-to-metal or metal-to-PVC connections will be securely fastened and sealed with welds, gaskets, mastics (adhesives), mastic-plus-embedded-fabric systems, or tapes
    • Flexible duct-to-metal or flexible duct-to-PVC connections will be fastened with tie bands using a tie band tensioning tool
    • PVC-to-PVC connections will be fastened with approved PVC cement
    • Other specialized duct fittings will be fastened according to manufacturer specifications
    • In addition to mechanical fasteners, duct connections will be sealed with UL 181B or 181B-M listed material

    Exhaust to outside

    2989
    6.6003.1f
    Fan housing seal

    Gaps and holes in fan housing will be sealed with caulk or other sealants in accordance with manufacturer recommendations

    Sealants will be compatible with their intended surfaces

    Sealants will be continuous and meet fire barrier specifications

    Prevent air leakage through fan housing

    Ensure a permanent seal

    Prevent a fire hazard

    2990
    6.6003.1g
    Fan to interior surface seal

    Sealants will be compatible with their intended surfaces

    Sealants will be continuous and meet fire barrier specifications

    Prevent air leakage between house and fan

    2991
    6.6003.1h
    Air flow

    Air flows in cubic feet per minute (CFM) will be measured and adjusted to meet the whole house upgrade design requirements

    Exhaust sufficient air from desired locations to outside

    2992
    6.6003.1i
    Preventing air leakage caused by exhaust fans

    Leakage to the house from other spaces will be prevented (e.g., garages, unconditioned crawl spaces, unconditioned attics)

    Ensure occupant health and safety

    2993
    6.6003.1j
    Combustion safety

    Pressure effects will be assessed and corrected on all combustion appliances

    Ensure safe operation of combustion appliances

    2994

    6.6003.2 Inline

    Topic: 
    Exhaust
    Subtopic: 
    Fans
    Desired Outcome: 
    Inline fans installed to specification
    Note: 
    The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
    For supporting material, see Referenced Standards and Calculation of the Infiltration Credit.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    6.6003.2a
    Wiring

    Wiring will be installed by a properly licensed contractor, as required by the authority having jurisdiction

    Wiring will be installed in accordance with original equipment manufacturer specifications, and local and national electrical and mechanical codes

    Prevent an electrical hazard

    2995
    6.6003.2b
    Access

    Fan and service switch will be accessible for maintenance according to NFPA 70 National Electric Code or local authority having jurisdiction

    Fan and service switch will be accessible for maintenance

    2996
    6.6003.2c
    Fan mounting

    Fan outlet will be oriented toward the final termination location

    Fan will be oriented so the equivalent length of the duct run is as short as possible

    Fan will be mounted securely in accordance with manufacturer specifications

    Fan will be isolated from the building framing unless specifically designed to be directly attached

    Fan will be installed remotely by installing ducting from intake grille

    Ensure short duct run to achieve optimum air flow

    Ensure fan is installed securely

    Ensure fan housing or building framing does not shake, rattle, or hum when operating

    Minimize noise

    2997
    6.6003.2d
    Backdraft damper

    A backdraft damper will be installed between the outlet side of the fan and the exterior

    Prevent reverse air flow when the fan is off

    2998
    6.6003.2e
    Duct connections

    Ducts will be connected and sealed to the intake fan and termination fitting as follows:

    • Round metal-to-metal or metal-to-PVC connections will be fastened with a minimum of three equally spaced screws
    • Other metal-to-metal or metal-to-PVC connections will be securely fastened and sealed with welds, gaskets, mastics (adhesives), mastic-plus-embedded-fabric systems or tapes
    • Flexible duct-to-metal or flexible duct-to-PVC connections will be fastened with tie bands using a tie band tensioning tool
    • PVC-to-PVC connections will be fastened with approved PVC cement
    • Other specialized duct fittings will be fastened in accordance with manufacturer specifications
    • In addition to mechanical fasteners, duct connections will be sealed with UL 181B or 181B-M listed material

    Exhaust from desired location to outside

    Preserve integrity of the duct system and building envelope

    2999
    6.6003.2f
    Boot to interior surface seal

    Sealants will be compatible with their intended surfaces

    Sealants will be continuous and meet fire barrier specifications

    Prevent air leakage around intake housing

    Prevent a fire hazard

    3000
    6.6003.2g
    Air flow

    Air flows in CFM will be measured and adjusted to meet the design requirements

    Exhaust sufficient air from desired locations to outside

    3001
    6.6003.2h
    Preventing air leakage caused by exhaust fans

    Leakage to the house from other spaces will be prevented (e.g., garages, unconditioned crawl spaces, unconditioned attics)

    Ensure occupant health and safety

    3002
    6.6003.2i
    Combustion safety

    Pressure effects caused by fans will be assessed and corrected when found outside of combustion safety standards

    Exhaust fans and other exhausting systems shall be provided with makeup air or other pressure relief

    Ensure safe operation of combustion appliances

    3003

    6.6003.5 Garage Exhaust Fan

    Topic: 
    Exhaust
    Subtopic: 
    Fans
    Desired Outcome: 
    Contaminants properly removed from house
    For supporting material, see Referenced Standards and Calculation of the Infiltration Credit.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    6.6003.5a
    System selection

    Ventilation for garage will be exhaust only and provide a minimum installed capacity of 100 CFM of ventilation per vehicle bay and will vent directly outdoors

    Garage exhaust fan will be wired for continuous operation or installed with automatic controls that activate the fan whenever the garage is occupied and for at least 15 minutes after the garage has been vacated

    If a ducted fan (not through-the-wall) is used, measure and verify the minimum air flow and adjust as necessary

    Remove contaminants from garage

    Reduce contaminant migration from garage to house

    Ensure occupant health and safety

    3004
    6.6003.5b
    Air leakage

    Air leakage between the house and garages will be prevented by sealing and weatherstripping

    Ensure occupant health and safety

    Reduce conditioned air being drawn from the house

    Reduce contaminant migration from garage to house

    3005
    6.6003.5c
    Combustion safety

    Pressure effects caused by fans will be assessed and corrected when found outside of combustion safety standards

    Exhaust fans and other exhausting systems shall be provided with makeup air or other pressure relief

    Ensure safe operation of combustion appliances

    Ensure occupant health and safety

    3006

    6.6003.6 Fan Placement (Whole House/Common Space Exhaust Only)

    Topic: 
    Exhaust
    Subtopic: 
    Fans
    Desired Outcome: 
    Provide primary ventilation for common spaces

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    6.6003.6a
    Clearance

    Clearance for size of the fan recommended will be determined

    Consideration will be given for adequate head clearance

    Ensure access for installation, operation, and maintenance

    Ensure occupant safety

    3007
    6.6003.6b
    Power source

    Power source load will be determined as adequate

    Consideration will be given to power source location

    Provide accessible and adequate power source

    3008
    6.6003.6c
    Location

    No resistance greater than 3 pascals will exist between fan intake location with reference to the common area

    Allow fresh air distribution to common areas

    3009
    6.6003.6d
    Duct/vent

    Consideration will be given to:

    • Vent termination location
    • Amount of space for duct run
    • Roof condition and type (e.g., metal, shingle, bow string, flat)
    • Duct insulation

    When applicable, pitch duct to remove condensation to outdoors

    Ducts will be as straight as possible, fully extended, and have the shortest run possible

    To the extent possible, turns will be made so that the radius at the centerline is no less than one duct diameter

    Duct diameter will be equal to or greater than the exhaust fan outlet

    Fan flow will be verified by flow measurement to meet ASHRAE standard 62.2

    Effectively move the required volume of air

    3010
    6.6003.6e
    Attachment

    Fan will be secured to a structural component

    Structural integrity of the manufactured home will be maintained (e.g., roof trusses, walls, floor joists)

    Maintain structural integrity

    Maintain fan attachment

    3011
    6.6003.6f
    Total exhaust airflow

    Total exhaust system airflow will be measured

    Ensure exhaust airflow is as designed

    3012

    6.6005.1 Clothes Dryer

    Topic: 
    Exhaust
    Subtopic: 
    Appliance Exhaust Vents
    Desired Outcome: 
    Dryer air exhausted efficiently and safely
    For supporting material, see Calculation of the Infiltration Credit, Referenced Standards and Building America Solution Center.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    6.6005.1a
    Clothes dryer ducting

    Clothes dryers will be ducted to the outdoors, which does not include unconditioned spaces, such as attics and crawl spaces that are ventilated with the outdoors

    As short a run as practical of rigid sheet metal or semi-rigid sheet metal venting material will be used in accordance with manufacturer specifications

    Dryer ducts exceeding 35' in duct equivalent length will have a dryer booster fan installed

    Plastic venting material will not be used

    Uninsulated clothes dryer duct will not pass through unconditioned spaces, such as attics and crawl spaces, except where allowed by the authority having jurisdiction

    Ducts will be connected and sealed as follows:

    • UL-listed foil type or semi-rigid sheet metal to rigid metal will be fastened with clamp
    • Other specialized duct fittings will be fastened in accordance with manufacturer specifications
    • In addition to mechanical fasteners, duct connections will be sealed with UL 181B or 181B-M listed material

    In addition,

    • Sheet metal screws or other fasteners that will obstruct the exhaust flow will not be used
    • Condensing dryers will be plumbed to a drain

    Preserve integrity of building envelope

    Effectively move air from clothes dryer to outside

    3013
    6.6005.1b
    Termination fitting

    Termination fitting manufactured for use with dryers will be installed

    A backdraft damper will be included, as described in termination fitting detail

    Preserve integrity of building envelope

    Effectively move air from clothes dryer to outside

    3014
    6.6005.1c
    Makeup air

    If natural draft combustion appliances are present and if worst-case CAZ and/or other performance based testing is conducted and indicates a need for make-up air, make-up air will be provided in accordance with the current version of ASHRAE 62.2 and in compliance with the authority having jurisdiction.  

    If  natural draft combustion appliances are present and if no performance based testing is conducted, make-up air will be provided prescriptively in accordance with the current version of ASHRAE 62.2 and in compliance with the authority having jurisdiction.

    Preserve integrity of building envelope

    Effectively move air from clothes dryer to outside

    3015
    6.6005.1d
    Combustion safety

    Pressure effects caused by fans will be assessed and corrected when found outside of combustion safety standards

    Ensure safe operation of combustion appliances

    Ensure occupant health and safety

    3016
    6.6005.1e
    Occupant education

    Occupant will be instructed to keep lint filter and termination fitting clean

    Occupant will be instructed to keep dryer booster fan clean, if present

    Occupant will be instructed on clothes dryer operation safety, including information on items that must not be placed in the clothes dryer (items with any oil or other flammable liquid on it, foam, rubber, plastic or other heat-sensitive fabric, glass fiber materials)

    Effectively move air from clothes dryer to outside

    3017

    6.6005.2 Kitchen Range

    Topic: 
    Exhaust
    Subtopic: 
    Appliance Exhaust Vents
    Desired Outcome: 
    Kitchen range fan installed to specification
    Note: 
    The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
    For supporting material, see Calculation of the Infiltration Credit, Referenced Standards and Building America Solution Center.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    6.6005.2a
    Wiring

    Wiring will be installed in accordance with local regulations or the IRC in the absence of such regulations or where those regulations are not as stringent as the IRC

    Wiring will be installed in accordance with original equipment manufacturer specifications, and local and national electrical and mechanical codes

    Wiring will be installed by a licensed electrician

    Prevent an electrical hazard

    3018
    6.6005.2b
    Fan venting

    Kitchen range fans will be vented to the outdoors

    Recirculating fans will not be used as a ventilating device

    Remove cooking contaminants from the house

    Preserve integrity of building envelope

    3019
    6.6005.2c
    Fan ducting

    Kitchen range fans will be ducted to the outdoors

    As short a run as practical of smooth wall metal duct will be used, following manufacturer specifications

    Ducting will be connected and sealed as follows:

    • Metal-to-metal connections will be fastened with a minimum of three equally spaced screws
    • Other metal-to-metal connections will be securely fastened and sealed with welds, gaskets, mastics (adhesives), mastic-plus-embedded-fabric systems, or tapes
    • For down-draft exhaust systems, PVC-to-PVC connections will be fastened with approved PVC cement
    • Other specialized duct fittings will be fastened in accordance with manufacturer specifications
    • In addition to mechanical fasteners, duct connections will be sealed with UL 181B or 181B-M listed material

    Preserve integrity of building envelope

    Effectively move air from range to outside

    3020
    6.6005.2d
    Termination fitting

    Termination fitting will be installed including a backdraft damper, as described in termination fitting detail

    Ensure safe operation of combustion appliances

    Ensure occupant health and safety

    3021
    6.6005.2e
    Makeup air

    Makeup air will be provided for kitchen range fans exhausting more than 200 CFM

    Ensure safe operation of combustion appliances

    Ensure occupant health and safety

    3022
    6.6005.2f
    Combustion safety

    Pressure effects caused by fans will be assessed and corrected when found outside of combustion safety standards

    Ensure safe operation of combustion appliances

    Ensure occupant health and safety

    3023
    6.6005.2g
    Occupant education

    Occupant will be instructed to keep grease filters and termination fitting clean

    Effectively move air from kitchen range to outdoors

    3024

    6.6102.4 Intake for Ventilation Air to Forced Air System Used for Heating or Cooling

    Topic: 
    Supply
    Subtopic: 
    Components
    Desired Outcome: 
    Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability
    Note: 
    The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    6.6102.4a
    Forced air system requirements

    Existing forced air system leakage to the outside will be less than 10% of the air handler flow when measured at 25 pascals with reference to the outside

    Any portion of the return located inside the Combustion Appliance Zone will be air sealed

    Reduce migration of pollutants

    3025
    6.6102.4b
    Wiring

    Wiring will be installed by a properly licensed contractor, as required by the authority having jurisdiction

    Wiring will be installed in accordance with original equipment manufacturer specifications, and local and national electrical and mechanical codes

    Prevent an electrical hazard

    3026
    6.6102.4c
    Access

    Motorized damper and service switch will be accessible for maintenance in accordance with required code or authority having jurisdiction

    Ensure accessibility for maintenance

    3027
    6.6102.4d
    Mounting intake duct

    Ventilation duct will be attached as close to the HVAC system's fan as possible while remaining in compliance with HVAC manufacturer specifications

    Filtration of ventilation air will be provided before reaching the thermal conditioning components

    Filtration will be accessible and serviceable

    Duct will be connected to intake fitting

    Connection and seal will be performed in accordance with supply duct detail

    Ensure short duct run to achieve optimum air flow

    Preserve integrity of the duct system and building envelope

    3028
    6.6102.4e
    Motorized damper

    A motorized damper or equivalent technology will be installed between the intake fitting and the return side of the air handler

    Air flow will be provided by sequenced operation of the damper or equivalent technology

    Prevent air flow when none is desired

    3029
    6.6102.4f
    Intake filter

    An accessible filter will be installed

    Filter will be able to remove contaminants consistent with at least minimum efficiency reporting value (MERV) 6 or better when tested in accordance with ANSI/ASHRAE 52.2

    Filter or air cleaning systems that intentionally produce ozone will not be allowed

    Ensure occupant health and safety

    Preserve integrity of the building envelope

    3030
    6.6102.4g
    Occupant education

    Occupant will be educated on how and when to change filter

    Ensure occupant health and safety

    Preserve integrity of the building envelope

    3031
    6.6102.4h
    Intake ventilation airflow

    Total intake ventilation airflow will be measured

    Ensure airflow is as designed

    3032

    6.6188.2 Removing Supply Vents from Garages

    Topic: 
    Supply
    Subtopic: 
    Special Considerations
    Desired Outcome: 
    Safe removal of garage supply vents

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    6.6188.2a
    Removal of supply/return in garage

    Supply run feeding the register will be truncated as near to the supply plenum as possible

    If directly connected to the plenum, the supply run will be truncated at the plenum

    If connected to a Y or T branch system, the supply run will be truncated at the Y or T

    Return grille located in garage will be removed in the same manner as supply

    Minimize duct leakage

    3033
    6.6188.2b
    Patching of the hole in the duct system created by removal

    All holes in sheet metal ducts will be patched with sheet metal and secured with sufficient screws to hold the patch flat without gaps

    Holes left in any Y or T will be capped with sheet metal caps and fastened with at least three screws

    Ensure a secure and strong patch

    3034
    6.6188.2c
    Sealing of the patch

    All patches will be sealed with mastic meeting UL 181 and in accordance with manufacturer specifications

    Ensure an airtight patch

    3035
    6.6188.2d
    Removal of discarded ducts

    All abandoned ductwork will be removed from work area

    Provide a clean work site

    3036
    6.6188.2e
    Patching of the register hole in garage

    Holes created by the removal of the register and boot will be patched and taped using material meeting local codes

    Prevent a fire hazard

    3037
    6.6188.2f
    External static pressure testing

    Units will be tested for external static pressure (ESP) before and after work

    If there is a significant rise in ESP, air flow testing will be required

    Ensure correct fan performance

    3038
    6.6188.2g
    CAZ testing

    CAZ testing will be performed where combustion appliances are utilized

    Identify possible conditions that can cause unsafe equipment operating conditions

    3039

    6.6204.1 Commissioning Ventilation Systems

    Topic: 
    Whole Building Ventilation
    Subtopic: 
    System Evaluation
    Desired Outcome: 

    Verify proper operation of existing system,installed system air flow meets required standard and provides continuous ventilation for background pollutant sources

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    6.6204.1a
    Identification

    Identify whole building ventilation strategy that was installed in the home, based on options described in current version of ASHRAE 62.2, e.g., exhaust only, supply only, balanced, combining local and whole home ventilation delivery, incorporating infiltration credit, etc.

    Ensure suitable whole building ventilation strategy is installed

    Identify testing requirements to determine installed system air flow

    3040
    6.6204.1b
    Equipment inspection

    Visually inspect and document status of:

    • Electrical connections
    • Name plate (rated sone and flow)
    • Motor cleanliness
       

    Evaluate equipment

    3041
    6.6204.1c
    Pathway inspection

    Visually inspect and document status of ducting or other airflow pathways to ensure proper:

    • Conections (proper materials, sealed and connected)
    • Insulation
    • Support
    • Sizing, and
    • Termination locations and fittings

    Verify proper damper operation

    Preserve integrity of building envelope

    Effectively move air along selected pathways

    3042
    6.6204.1d
    Measurement and Adjustment

    Using a calibrated device, measure air flow of all necessary components, including building air leakage when relevant

    Adjust ventilation equipment air flows as necessary to meet the ventilation rates required by the current version of ASHRAE 62.2.

    Provide sufficient air flows per current ventilation standards

    Verify suitable performance of installed ventilation strategy

    3043
    6.6204.1e
    Work order

    Develop work order as necessary to correct deficiencies identified during inspections and measurement

    Correct deficiencies

    Ensure proper operation

    6952
    6.6204.1f
    Occupant education

    Instruct occupant on purpose, use and maintenance of ventilation, and typical signs that ventilation is needed, e.g., condensation on windows

    Occupant understands benefits of good indoor air quality and can operate ventilation equipment as needed

    6953

    6.6205.1 Manufactured Housing Exhaust-Only Strategies

    Topic: 
    Whole Building Ventilation
    Subtopic: 
    Exhaust-Only System
    Desired Outcome: 
    Provide primary ventilation for common spaces

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    6.6205.1a
    Assessment

    Assessment will be done using ASHRAE 62.2 standard:

    • Blower door test
    • Fan flow measurements
    • Calculations

    Determine the ventilation needs of the whole house

    3044
    6.6205.1b
    Selection

    Fan type will be capable of continuous operation and selected in accordance with ASHRAE 62.2 for:

    • Sizing
    • Climate considerations
    • Control strategy
    • Sone rating
    • Durability

    Fan will be ENERGY STAR qualified

    Determine proper fan selection

    Minimize energy consumption during fan operation

    3045
    6.6205.1c
    Location

    No resistance greater than 3 pascals will exist between fan intake location with reference to the common area 

    Ensure fresh air distribution to common areas

    3046
    6.6205.1d
    Climate considerations

    ASHRAE 62.2 will be referenced for climate considerations

    Whole house mechanical net exhaust flow for hot-humid climate will not exceed 7.5 cubic feet per minute/100 square feet

    Maintain building durability

    Protect occupant health

    3047
    6.6205.1e
    Combustion Appliance Zone (CAZ) testing

    CAZ test will be performed where combustion appliances are utilized, where applicable

    Identify possible conditions that can cause unsafe equipment operating conditions

    3048
    6.6205.1f
    Occupant education

    Occupant will be educated on:

    • Purpose of the ventilation system
    • Proper operation and use of controls
    • Cost and benefit of system
    • Manual shut off

    A label indicating the presence and purpose of the ventilation system will be included or a copy of the system operation guide will be posted at the electrical panel

    Operation guide or label will be permanently attached and in full sight

    Ensure occupant is educated on the safe and efficient operation of the system

    Deliver intended air exchange

    3049
    6.6205.1g
    Total exhaust airflow

    Total exhaust system airflow will be measured

    Ensure exhaust airflow is as designed

    3050

    6.6206.1 Decommissioning Existing Exhaust or Supply Ventilation Systems

    Topic: 
    Whole Building Ventilation
    Subtopic: 
    Equipment Removal
    Desired Outcome: 
    Safely and properly eliminate fan

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    6.6206.1a
    Power supply

    Power supply will be disconnected and properly terminated in visible junction box

    Safe removal of equipment

    Ensure worker safety

    3051
    6.6206.1b
    Removal

    Fan components will be removed and disposed of lawfully

    Duct work will be removed if necessary

    OR

    Fan housing will be left in place, ducts will be removed, and leakage points will be air sealed

    Hole will be sealed and insulated to preserve the thermal and pressure boundary

    Remove fan

    Preserve aesthetics, and thermal and pressure boundary

    3052
    6.6206.1c
    Repair

    Fan opening will be sealed and insulated

    If necessary, the void from the duct work removal will be insulated

    Fan termination will be sealed

    Maximize energy efficiency

    Preserve the thermal and pressure boundary

    3053
    6.6206.1d
    Combustion Appliance Zone (CAZ) testing

    Combustion safety test will be performed where combustion appliances are utilized

    Identify possible conditions that can cause unsafe equipment operating conditions

    3054

    6.6288.2 Sound Ratings—New Fan Installation

    Topic: 
    Whole Building Ventilation
    Subtopic: 
    Special Considerations
    Desired Outcome: 
    Systems operate as quietly as possible

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    6.6288.2a
    Primary ventilation system/continuously operating fan

    System will be rated at a sound no greater than 1.0 sone

    Minimize noise

    Maximize fan use

    3055
    6.6288.2b
    Intermittent spot ventilation system

    Spot ventilation (local mechanical exhaust systems operated as needed by the occupant; e.g., range hood, bath fans) will be rated at a sound no greater than 3.0 sone

    Minimize noise

    Maximize fan use

    3056

    6.9901.1 Supplemental Ventilation Information—ASHRAE 62.2

    Topic: 
    Additional Resources
    Subtopic: 
    Codes and Standards Resources
    Desired Outcome: 
    To provide supplemental ventilation information—ASHRAE 62.2
    For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    6.9901.1a
    Ventilation fan flow rate
    ASHRAE Standard 62.2 and the calculation of the infiltration credit allow adjustments to primary ventilation fan flow rates for existing houses using a single fan.To provide supplemental ventilation information--ASHRAE 62.24283

    Section 7:Baseload

    7.8001.1 Refrigerator and Freezer Replacement

    Topic: 
    Plug Load
    Subtopic: 
    Refrigerators/Freezers
    Desired Outcome: 
    A more energy efficient appliance installed
    For supporting material, see Referenced Standards and Building America Solution Center.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    7.8001.1a
    Selection

    Appliance shall be ENERGY STAR® qualified or at least as energy efficient

    Appliance will fit in the available space without blocking access to light switches, cabinets, etc.

    Appliance will carry a minimum one-year warranty that will provide a replacement appliance if repeated issues relating to health, safety, or performance occur

    Ensure occupant satisfaction with appliance

    3057
    7.8001.1b
    Installation

    Appliance will be installed in accordance with manufacturer specifications and local codes

    Any penetrations to the exterior of the home created by the installation of the appliance will be sealed

    Energy-related appliance controls will be demonstrated to the occupant

    Specific information on the proper maintenance of the equipment will be provided to the occupant

    Warranty information, operation manuals, and installer contact information will be provided to the occupant

    Achieve intended appliance function

    Preserve food at low energy use

    Educate occupant on how to operate and maintain the appliance

    3058
    7.8001.1c
    Decommissioning

    Appliances replaced by new units will be recycled or disposed of in accordance with federal, state, or local regulations

    Appliances infested with pests will be enclosed before moving

    Prevent reuse of inefficient equipment and components

    Protect the environment

    Protect worker safety

    3059

    7.8001.2 Cleaning and Tuning Existing Refrigerators and Freezers

    Topic: 
    Plug Load
    Subtopic: 
    Refrigerators/Freezers
    Desired Outcome: 
    Energy used for food preservation reduced
    For supporting material, see Referenced Standards and Calculation of the Infiltration Credit.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    7.8001.2a
    Clean and tune

    Dirty or clogged coils will be cleaned

    Air flow to the coils will be provided in accordance with manufacturer specifications

    Appliance will be located away from heat sources (e.g., supply registers, direct sunlight) if possible

    Interior temperatures will be measured, and the appliance must maintain:

    • Freezer temperature at 0°
    • Fresh food at 35-40°

    Specific information about the proper maintenance of the equipment will be provided to the occupant

    Condensation control switch will be left in the appropriate position, given occupant preference and moisture load in the house

    Reduce energy use

    Improve performance

    Educate occupant on how to operate and maintain the appliance

    3060

    7.8002.1 Entertainment and Computer Systems and Components Replacement

    Topic: 
    Plug Load
    Subtopic: 
    Electronics
    Desired Outcome: 
    Energy used for electronic entertainment and computer use reduced while effective performance is maintained
    For supporting material, see Referenced Standards, Calculation of the Infiltration Credit and Building America Solution Center.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    7.8002.1a
    Selection

    Category of equipment selected will meet occupant preferences and have the lowest available energy use [e.g., plasma vs. light-emitting diode (LED)]

    Equipment will have a minimum energy efficiency level of ENERGY STAR

    Equipment will be selected that does not have to be left on during non-use periods for updates (e.g., gaming systems, set-top boxes)

    Standby losses for system will be one watt or less

    Reduce energy use

    Ensure occupant satisfaction with appliance

    3061
    7.8002.1b
    Installation

    Equipment will be installed in accordance with manufacturer specifications (e.g., air circulation) and meet all applicable codes

    Any penetrations to the exterior of the home created by the installation of the equipment will be sealed

    All energy saving features will be enabled unless specifically directed otherwise by the occupant

    A readily accessible means of disconnection (e.g., power strip, timer) will be provided for equipment that must be disconnected from the power source to avoid standby losses and whose performance will not be damaged by being disconnected

    All equipment controls will be demonstrated to the occupant

    Specific information about the proper maintenance of the equipment will be provided to the occupant

    Warranty information, operation manuals, and installer contact information will be provided to the occupant

    Reduce energy use

    Ensure equipment is available for use when needed

    Ensure equipment is convenient to turn off when not in use

    Educate occupant on how to operate and maintain equipment

    3062
    7.8002.1c
    Decommissioning

    Equipment will be recycled or disposed of using Environmental Protection Agency (EPA) Responsible Recycling (R2) initiative principles

    Prevent reuse of inefficient equipment and components

    Reduce waste

    Properly dispose of hazardous materials

    3063

    7.8003.1 Lighting Upgrade

    Topic: 
    Plug Load
    Subtopic: 
    Lighting
    Desired Outcome: 
    Energy used for lighting reduced while maintaining adequate and safe lighting levels
    For supporting material, see Calculation of the Infiltration Credit, Referenced Standards and Building America Solution Center.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    7.8003.1a
    Daylighting

    Window coverings (e.g., blinds, shades, movable insulation) will be replaced or maneuvered to maximize useful daylight where appropriate

    Active and passive daylighting will be properly oriented, designed, and installed where appropriate

    Reduce energy use without negative consequences (e.g., glare, unintentional heating)

    3064
    7.8003.1b
    Selection

    All bulbs, fixtures, and controls will be appropriate for the intended application (e.g., enclosed, orientation, dimmable, potential for breakage, indoor and outdoor)

    All bulbs, fixtures, and controls will be selected to provide the brightness and light quality required in that application (e.g., task lighting, trip-and- fall hazards, nightlights)

    Selected equipment should have the highest level of efficiency within a technology [e.g., compact fluorescent lamp (CFL), LED]

    All bulbs, fixtures, and controls will be ENERGY STAR rated where applicable

    When possible, bulbs, fixtures, and controls will be selected that will facilitate the use of future lighting technologies (e.g., LEDs)

    When incandescent bulbs cannot be replaced or when occupant chooses not to replace, a dimmer will be selected

    Light/lamp wattage should not exceed rated wattage of fixture

    Bulb replacements will be chosen based on expected durability, light quality, and lifetime energy use of the bulb

    Controls to turn off lights when not needed (e.g., no one in room) will be provided

    All bulbs, fixtures, and controls will be UL-approved and installed in accordance with local code(s) and NFPA 70 National Electric Code

    Fluorescent light ballasts containing polychlorinated biphenyls (PCBs) will be replaced in accordance with the EPA's Healthy Indoor Environment Protocols for Home Energy Upgrades

    Provide improved lighting quality at lower energy use

    Select equipment that will not be an unnecessary barrier to future technologies

    Avoid inferior products and unsatisfied occupants

    3065

    7.8004.1 Washing Machine

    Topic: 
    Plug Load
    Subtopic: 
    Laundry
    Desired Outcome: 
    Energy and environmental impact for washing clothes reduced
    Note: 
    The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
    For supporting material, see Calculation of the Infiltration Credit, Referenced Standards and Building America Solution Center.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    7.8004.1a
    Selection

    Minimum appliance efficiency will be ENERGY STAR and Water Sense or better

    Classes within ENERGY STAR standards will be considered so as to achieve greater savings

    Adequate clearance will be maintained around appliance when fit into available space so access to cabinets and light switches are not blocked

    Appliance will be covered by a minimum one-year warranty

    Equipment will be selected with features that reduce peak electric demand, absolute energy use, and water use

    Standby losses for equipment will be one watt or less

    Reduce energy use

    Ensure occupant satisfaction with appliance

    3066
    7.8004.1b
    Installation

    Appliance will be installed in accordance with manufacturer specifications (e.g., leveling, plumbing connection, electrical connection, interior lighting) and meet all applicable codes

    Shut-off valves will be installed by a licensed plumber or other qualified contractor in accordance with the authority having jurisdiction, if not already present

    Hoses that can withstand water pressure at the location will be installed

    If located in conditioned or finished area, overflow pan will be installed and drained to a safe location

    Any penetrations to the exterior of the home created by the installation of the appliance will be sealed

    Energy-related appliance controls will be demonstrated to the occupant

    Specific information about proper maintenance of the equipment will be provided to the occupant

    Water quality will be evaluated using a pH and hardness tests, and the occupant will be informed on detergent levels and type to optimize performance

    Warranty information, operation manuals, and installer contact information will be provided to the occupant

    Ensure equipment functions as designed

    Reduce water consumption

    Prevent water damage

    Educate occupants on how to maintain washer to ensure savings

    3067
    7.8004.1c
    Decommissioning

    Replaced appliances will be recycled or removed in accordance with local regulations, including older equipment switches containing mercury

    Prevent the reuse of inefficient equipment and its components

    Reduce waste

    Ensure occupant health

    3068

    7.8004.2 Clothes Dryer Replacement

    Topic: 
    Plug Load
    Subtopic: 
    Laundry
    Desired Outcome: 
    Energy and environmental impact for drying clothes reduced
    For supporting material, see Calculation of the Infiltration Credit, Referenced Standards and Building America Solution Center.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    7.8004.2a
    Selection

    Total energy use will be factored into the selection process if fuel switching is being considered

    Dryer will be equipped with moisture sensor

    Equipment will be selected with energy features that reduce both peak electric demand and absolute energy use

    Standby losses for equipment will be one watt or less

    A dryer best matched to the venting options will be selected (e.g., central location, length of vent, cost of venting)

    Appliance will be covered by a minimum one-year warranty

    Reduce energy use

    Avoid increasing total energy use (gas and electric) when fuel switching

    3069
    7.8004.2b
    Installation

    Appliance will be installed in accordance with manufacturer specifications (e.g., leveling, plumbing connection, electrical connection, interior lighting) and meet all applicable codes

    If existing venting does not meet the following criteria (as well as manufacturer specifications and applicable codes), new venting will be installed using the following specifications:

    • Appliance will be vented to the outside using metal-to-metal or UL-listed foil-type venting material
    • Venting design will meet standards for optimal venting
    • Venting will not be constricted or blocked
    • Only screws will be used to connect metal-to-metal and must not catch lint inside venting material
    • Only clamps will be used on semi-rigid metal and UL-listed foil-type venting materials
    • At least 3' of the vent closest to the exterior of the house will be insulated with a minimum of R-6

    All dryers, other than condensing dryers, will be vented to the outdoors

    If a combustion appliance is used, combustion safety testing will be performed in accordance with the Health and Safety Chapter of the Standard Work Specifications for Single-Family Housing or other equivalent practice

    Any penetrations to the exterior of the home created by the installation of the appliance will be sealed

    Energy-related appliance controls will be demonstrated to the occupant

    Specific information of the proper maintenance of the equipment will be provided to the occupant

    Warranty information, operation manuals, and installer contact information will be provided to the occupant

    Ensure equipment functions as designed

    Install appliance safely and effectively

    Ensure house as a whole system is not adversely affecting the proper functioning/venting of equipment

    Reduce energy use

    In case of fuel switching, reduce cost

    3070
    7.8004.2c
    Decommissioning

    Replaced appliances will be recycled or removed and disposed of in accordance with local regulations, including older equipment switches containing mercury

    Prevent the reuse of inefficient equipment and its components

    Reduce waste

    Ensure occupant health

    3071

    7.8101.1 Shower Head and Faucet Aerator

    Topic: 
    Water Heating
    Subtopic: 
    Water Use Reduction
    Desired Outcome: 
    Energy and water use reduced while occupant needs for water flow maintained
    Note: 
    The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    7.8101.1a
    Work assessment

    Installer prework assessment will be conducted to determine if plumbing needs corrected before installing high-efficiency shower head or faucet

    Verify scope of work

    3072
    7.8101.1b
    Selection

    The rated flow of new shower heads will be 2.5 gallons per minute (GPM) or less

    If multiple heads are provided, the total flow rate will not exceed 2.5 GPM

    Aerator flow rate will be 2.2 GPM or less

    All work shall be completed by a licensed plumbing professional where required by the authority having jurisdiction and installed to industry-accepted standards

    Reduce water and energy consumption

    Ensure occupant satisfaction

    3073
    7.8101.1c
    Installation

    Equipment will be installed in accordance with manufacturer specifications and meet all applicable building codes

    Water quality will be evaluated for debris that may clog the equipment

    Once installed, high-efficiency shower heads or faucet aerators will be tested to determine if equipment is tightened adequately to prevent leakage at the point of connection

    If needed, shower diverter will be repaired or replaced

    Any penetrations to the exterior of the home created by the installation of the equipment will be sealed

    Any damage done to the house during installation will be repaired

    Specific information about proper maintenance of the equipment will be provided to the occupant

    Warranty information, operation manuals, and installer contact information will be provided to the occupant

    Water flow that satisfies the occupant will be provided by all shower heads and faucet aerators

    Occupant's acceptance of the shower head and/or aerator will be documented

    Reduce water and energy consumption

    Ensure occupant satisfaction with water flow

    Eliminate water leakage

    Prevent water damage

    3074
    7.8101.1d
    Decommissioning

    Replaced shower heads and faucet aerators will be recycled or disposed of properly

    Prevent the reuse of inefficient equipment and components

    3075

    7.8102.1 Water Heater Selection

    Topic: 
    Water Heating
    Subtopic: 
    Installation and Replacement
    Desired Outcome: 
    Safe, reliable, and efficient hot water source selected that meets occupant needs at lowest possible cost of ownership and operation
    For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    7.8102.1a
    Selection parameters

    Equipment will provide sufficient, affordable, safe, and healthy hot water for the occupant in accordance with IRC

    Potential for solar hot water heating or other renewable energy systems will be assessed in selecting the hot water equipment

    Potential for health and safety hazards (e.g., back drafting, flame rollout, obstructions) will be assessed in selecting equipment, and the cost of remedying such problems will be included in any cost and benefit calculations

    If a combustion-based system is selected, it will be either direct vented or power vented, and ENERGY STAR® qualified or an Energy Factor (EF) of 0.58 or higher

    If combustion equipment is selected, a low nitrogen oxide burner will be included

    Equipment will be functional at high efficiency under all load conditions

    Standby losses will be reduced to maximum potential

    Fuel type will be selected based on affordability to occupant

    Equipment will be freeze resistant or installed in a conditioned space

    Efficiency of equipment will be maintained throughout life of system

    Occupant control of hot water temperature will be provided on the equipment

    The following will be determined from the occupant:

    • Lifestyle
    • Current and future needs
    • Space considerations
    • Fuel options
    • Health and safety considerations
    • Appliance options
    • Maintenance and operation cost
    • Return on investment concerns

    Save energy and water

    Protect the environment

    Identify appliance options based on the needs and wants of the occupant

    3076
    7.8102.1b
    Product selection

    Water heater will be selected based on performance requirements of the occupant, available fuel sources, energy efficiency, and total life cycle cost

    In very cold climates, on-demand water heaters will be sized to meet the demand of water flow at very low water intake temperatures

    When evaluating an existing thermal solar water heating system, a solar expert should be consulted

    The proper installation and maintenance of solar hot water systems is provided in the Uniform Solar Energy Code (USEC) and IRC

    Ensure equipment meets the occupant's expectations while providing efficient energy and water use

    3077

    7.8102.2 Storage-Type Appliance

    Topic: 
    Water Heating
    Subtopic: 
    Installation and Replacement
    Desired Outcome: 
    Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership
    Note: 
    The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
    For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    7.8102.2a
    Hazardous material removal

    Health concerns in the removal and replacement of equipment (e.g., asbestos, other hazardous materials) will be identified

    Written notification will be provided to occupants of the discovery of hazardous material, including contact information for regional EPA asbestos coordinator

    Occupant will be asked to contract with an EPA-certified asbestos contractor to conduct abatement before equipment removal and replacement (occupant is responsible for abatement or remediation)

    Remediate health hazards using EPA- certified contractors

    3078
    7.8102.2b
    Equipment removal

    Accepted industry procedures and practices will be followed to:

    • Remove old water heater and associated components in accordance with IRC or authority having jurisdiction
    • Seal any unused chimney openings and penetrations in accordance with IRC or authority having jurisdiction
    • Remove unused oil tank, lines, valves, and associated equipment in accordance with IRC or authority having jurisdiction

    All work shall be completed by a licensed plumbing professional where required by the authority having jurisdiction and installed to industry-accepted standards

    Ensure the safety of the workers and occupants

    Preserve integrity of the building

    Remove old equipment in a timely and efficient manner

    3079
    7.8102.2c
    New equipment installation

    New water heater and associated components will be installed by a licensed contractor to accepted industry standards, in accordance with the IRC and manufacturer specifications

    The system will be installed to be freeze resistant

    Any existing water leaks will be repaired before installation begins

    Any penetrations to the exterior of the home created by the installation of the equipment will be sealed

    Ensure the safety of the workers and occupants

    Preserve integrity of the building

    Remove old equipment in a timely and efficient manner

    3080
    7.8102.2d
    Emergency drain pan

    An emergency drain pan will be installed with sides that extend a minimum of 4" above floor if leakage would cause damage to the home and in accordance with IRC

    A ¾" drain line or larger will be connected to tapping on pan and terminated in accordance with IRC

    Collect and safely dispose of water escaping from the storage tank

    3081
    7.8102.2e
    Expansion tank

    Expansion tanks will be installed where required and in accordance with the AHJ

    Protect the storage tank from expansion

    3082
    7.8102.2f
    Temperature and pressure relief valve

    Correct temperature and pressure relief valve will be installed in compliance with IRC and according to manufacturer specifications

    Temperature and pressure relief valve discharge tube will be installed in accordance with IRC

    Discharge excessive energy (pressure or temperature) from storage tank to safe location

    3083
    7.8102.2g
    Dielectric unions

    Dielectric unions will be installed in accordance with the IRC, authority having jurisdiction, and according to manufacturer specifications

    Break the stray voltage electrical circuit through the storage tank

    3084
    7.8102.2h
    Backflow prevention

    Backflow prevention will be installed in accordance with manufacturer specifications and all applicable codes

    Protect water supply from contamination

    3085
    7.8102.2i
    Thermal efficiency

    If additional tank insulation is installed, it will be rated a minimum of R-11 and will be installed to manufacturer specifications

    If additional insulation is installed, it will be installed based on fuel type, making sure not to obstruct draft diverter, pressure relief valve, thermostats, hi-limit switch, plumbing pipes or elements, and thermostat access plates

    The first 6' of inlet and outlet piping will be insulated in accordance with manufacturer specifications

    Combustible pipe insulation must maintain a minimum clearance of  6'' from gas water heater draft hood and/or single wall metal pipe. Clearance from vent such as "B" vent should be maintained per vent manufacturer's specifications

    Heat traps will be installed on the inlet and outlet piping where not provided by manufacturer

    Reduce standby loss from near tank piping and storage tank

    Ensure insulation does not make contact with flue gas venting

    3086
    7.8102.2j
    Fuel supply

    Electric or fossil fuel supply components will be installed to accepted industry standards as per NFPA 31 and 54, or NFPA 70 National Electric Code (NEC) for electric components, or authority having jurisdiction

    Provide sufficient fuel to the water heater, burner, or element

    3087
    7.8102.2k
    Discharge temperature

    Discharge temperature will be set not to exceed 120° or as prescribed by local code

    Ensure safe hot water supply temperature to fixtures

    3088
    7.8102.2l
    Commissioning of system

    The following will be checked once the system has been filled and purged:

    • Safety controls
    • Combustion safety and efficiency
    • Operational controls
    • Fuel and water leaks
    • Local code requirements

    Commissioning will be in compliance with manufacturer specifications and relevant industry standards

    Ensure safe system function

    Keep cost of ownership as low as possible

    3089
    7.8102.2m
    Occupant safety

    All homes will have a functioning CO alarm

    If determined to be more than 5 years old, CO detector/alarm will be replaced

    If CO levels in interior living spaces exceed outdoor levels, potential sources will be investigated and appropriate action taken to reduce them (e.g., have a qualified professional tune, repair, or replace improperly operating combustion appliances; apply weather stripping or conduct air sealing between the garage or crawl space and the home)

    Ensure occupant life safety; CO alarms are designed to detect levels at which occupants might become unable to evacuate

    3090
    7.8102.2n
    Occupant education

    Completed work will be reviewed

    Occupants will be educated on the safe and efficient operation and maintenance of the system, including:

    • Adjustment of water temperature and target temperature in accordance with local code
    • Periodic drain and flush
    • Expansion tank and backflow preventer (no occupant maintenance required)
    • Periodic inspection, maintenance, or replacement

    Ensure occupant is informed of the safe, efficient operation and maintenance of the system

    3091

    7.8102.3 On-Demand Appliance

    Topic: 
    Water Heating
    Subtopic: 
    Installation and Replacement
    Desired Outcome: 
    Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership
    Note: 
    The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
    For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    7.8102.3a
    Hazardous material removal

    Health concerns in the removal and replacement of equipment (e.g., asbestos, other hazardous materials) will be identified

    Written notification will be provided to occupants of the discovery of hazardous material, including contact information for regional EPA asbestos coordinator

    Occupants will be asked to contract with an EPA-certified asbestos contractor to conduct abatement before equipment removal and replacement (occupant is responsible for abatement or remediation)

    Remediate health hazards using EPA- certified contractors

    3092
    7.8102.3b
    Equipment removal

    Accepted industry procedures and practices will be followed to:

    • Remove old water heater and associated components in accordance with IRC
    • Seal any unused chimney openings and penetrations in accordance with IRC
    • Remove unused oil tank, lines, valves, and associated equipment in accordance with IRC

    All work shall be completed by a licensed plumbing professional where required by the authority having jurisdiction and installed to industry-accepted standards

    Ensure the safety of the workers and occupants

    Preserve integrity of the building

    Remove old equipment in a timely and efficient manner

    3093
    7.8102.3c
    New equipment installation

    A new water heater and associated components will be installed to accepted industry standards, in accordance with the IRC, authority having jurisdiction, and manufacturer specifications

    All work shall be completed by a licensed plumbing professional where required by the authority having jurisdiction

    Ensure the safety of the workers and occupants

    Preserve integrity of the building

    Remove old equipment in a timely and efficient manner

    3094
    7.8102.3d
    Emergency drain pan

    An emergency drain pan and drain line shall be installed in accordance with the IRC

    Collect and safely dispose of water escaping from the storage tank

    3095
    7.8102.3e
    Temperature and pressure relief valve

    Correct temperature and pressure relief valve will be installed in compliance with IRC and according to manufacturer specifications

    Temperature and pressure relief valve discharge tube will be installed in accordance with IRC

    Discharge excessive energy (pressure or temperature) from storage tank to safe location

    3096
    7.8102.3f
    Dielectric unions

    Dielectric unions will be installed to accepted industry standards, in accordance with the IRC, and according to manufacturer specifications

    Break the stray voltage electrical circuit through the storage tank

    3097
    7.8102.3g
    Backflow prevention and pressure regulator

    Backflow prevention will be installed in accordance with manufacturer specifications

    House water pressure and volume will be verified as sufficient to be in accordance with manufacturer specifications

    All applicable codes will be followed

    Protect the water supply from contamination

    Provide for sufficient volume and pressure

    3098
    7.8102.3h
    Thermal efficiency

    Any accessible hot water lines at the appliance will be insulated to meet IRC or local requirements, whichever is greater

    Reduce line losses

    3099
    7.8102.3i
    Required combustion air

    Recommendations will be made to install all on-demand appliances as sealed combustion

    If not possible:

    Combustion and ventilation (excess air) requirements of gas-fired appliances, including provision of outside and inside air to account for building tightness, will be provided

    The minimum required volume shall be 50 cubic feet per 1,000 Btu/h in accordance with IRC

    If needed, additional combustion air will be provided in accordance with IRC

    Ensure adequate combustion air for operation of the appliance

    3100
    7.8102.3j
    Venting of flue gases

    Combustion byproducts will be removed in accordance with IRC and manufacturer specifications

    Ensure the safety and durability of the venting system

    3101
    7.8102.3k
    Flue gas testing

    Undiluted flue gases will be checked with a calibrated combustion analyzer in accordance with BPI-1100-T

    If combustion is not in compliance with BPI-1100-T, diagnostics and adjustments will be done to manufacturer specifications or local codes

    Confirm that combustion is occurring safely with maximum efficiency

    3102
    7.8102.3l
    Electric and fossil fuel supply

    Electric or fossil fuel supply components will be installed to accepted industry standards as per IRC, the NFGC, NFPA 31, 54, and 58 for gas and oil, or NFPA 70 National Electric Code for electric

    Energy input required by the appliance will be in accordance with manufacturer specifications

    Provide sufficient fuel to the water heater burner or element

    3103
    7.8102.3m
    Cold water supply

    The volume and pressure of the water supplied to the appliance will be in accordance with manufacturer specifications

    Provide sufficient volume and pressure of water to the appliance

    3104
    7.8102.3n
    Discharge temperature

    Discharge temperature will be set in accordance with manufacturer instructions and in compliance with local codes

    Use extreme caution when temperature setting is above 120°F

    Ensure safe hot water supply temperature to fixtures

    3105
    7.8102.3o
    Commissioning of system

    The following will be checked once the system has been connected and filled:

    • Safety controls
    • Combustion safety and efficiency
    • Operational controls
    • Fuel and water leaks
    • Cycle unit
    • Local code requirements

    Manufacturer specifications and all relevant industry standards will be met in commissioning

    Ensure system functions safely with lowest possible cost of ownership

    3106
    7.8102.3p
    Ambient CO

    All homes with combustion appliances or an attached garage will have a carbon monoxide (CO) alarm

    Ensure occupant health and safety

    3107
    7.8102.3q
    Occupant education

    Completed work will be reviewed

    Occupants will be educated on the safe and efficient operation and maintenance of the system, including:

    • Adjustment of water temperature and target temperature in accordance with local code
    • Operation of backflow preventer and pressure regulator (no occupant maintenance required)
    • Importance of keeping operating manuals accessible

    Ensure occupant is informed of the safe, efficient operation and maintenance of the system

    3108

    7.8103.1 Storage-Type Appliance

    Topic: 
    Water Heating
    Subtopic: 
    Maintenance/Inspection
    Desired Outcome: 
    Safe, reliable, and efficient operation of the appliance maintained
    Note: 
    The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
    For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    7.8103.1a
    Health and safety

    Combustion safety testing will be performed in accordance with the Health and Safety Chapter of the Standard Work Specifications for Single-Family Housing or other equivalent practice

    Electrical components will be verified to comply with NEC (e.g., no electrical box connector, no disconnect, improperly sized breaker and wire)

    Identify potential health and safety issues

    4284
    7.8103.1b
    Visual inspection

    Inspection will be conducted to show compliance with the IRC, including but not limited to:

    • Water or fuel leaks
    • Damaged wiring
    • Venting issues with draft and condensation (e.g., soot, rusting of flue pipe, burned paint or wires, efflorescence)
    • Corrosion (e.g., rust, mineral deposits)
    • General condition of components

    Determine needed repairs or maintenance

    4285
    7.8103.1c
    Thermal efficiency

    Water heater storage tanks shall have a minimum R-value of R-24

    Added insulation will not obstruct the unit's draft diverter, pressure relief valve, thermostats, hi-limit switch, plumbing pipes or elements, and thermostat access plates

    The first 6' of inlet and outlet piping will be insulated in accordance with IRC or local requirements, whichever is greater

    Reduce standby losses from near tank piping and storage tank

    Ensure insulation does not make contact with flue gas venting

    4286
    7.8103.1e
    Temperature and pressure relief valve

    Correct temperature and pressure relief valve will be installed in compliance with IRC and according to manufacturer specifications

    Temperature and pressure relief valve discharge tube will be installed in accordance with IRC

    Discharge excessive energy (pressure or temperature) from storage tank to safe location

    4288
    7.8103.1f
    Maintenance records

    Occupants will be advised to keep records of all maintenance done to their system

    Copies of or access to installation and operation manuals will be provided

    Provide a history of system installation and maintenance to improve chance of successful future maintenance or repair

    4289
    7.8103.1g
    Occupant safety

    Carbon monoxide alarms will be installed in each dwelling in accordance with ASHRAE 62.2 and authority having local jurisdiction

    Occupant will be provided information regarding the health effects and risk of high CO concentrations, as well as a list of monitors that can provide more detail regarding CO levels

    Ensure occupant life safety

    Inform occupant regarding possible CO hazards

    4290
    7.8103.1h
    Occupant education

    Completed work will be reviewed

    Occupants will be educated on the safe and efficient operation and maintenance of the system, including:

    • Adjustment of water temperature and target temperature in accordance with local code
    • Periodic drain and flush
    • Periodic inspection, maintenance, or replacement of anode rod

    Ensure occupant is informed of the safe, efficient operation and maintenance of the system

    4291

    7.8103.2 On-Demand Appliance

    Topic: 
    Water Heating
    Subtopic: 
    Maintenance/Inspection
    Desired Outcome: 
    Safe, reliable, and efficient operation of the appliance maintained
    Note: 
    The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
    For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.

    Manufactured Housing

    TitleSpecification(s)Objective(s)
    7.8103.2a
    Health and safety

    Combustion safety testing will be performed in accordance with the Health and Safety Chapter of the Standard Work Specifications for Single-Family Housing or other equivalent practice

    Electrical components will be verified to comply with NFPA 70 National Electric Code (e.g., no electrical box connector, no disconnect, improperly sized breaker and wire)

    Identify potential health and safety issues

    3117
    7.8103.2b
    Visual inspection

    Inspection will be conducted to show compliance with the IRC, including but not limited to:

    • Water or fuel leaks
    • Damaged or missing pipe insulation and tank insulation, where applicable
    • Damaged wiring
    • Venting issues with draft and condensation (e.g., soot, rusting of flue pipe, burned paint or wires, efflorescence)
    • Corrosion (e.g., rust, mineral deposits)
    • General condition of components

    Determine needed repairs or maintenance

    3118
    7.8103.2c
    Temperature and pressure relief valve

    Correct temperature and pressure relief valve will be installed in compliance with IRC and according to manufacturer specifications

    Temperature and pressure relief valve discharge tube will be installed in accordance with IRC

    Discharge excessive energy (pressure or temperature) from storage tank to safe location

    3119
    7.8103.2d
    Flue gas testing

    Undiluted flue gases will be checked with a calibrated combustion analyzer in accordance with BPI-1100-T

    If combustion is not in compliance with BPI-1100-T, diagnostics and adjustments will be done to manufacturer specifications or local codes

    Perform combustion testing

    3120
    7.8103.2e
    Required combustion air

    If sealed combustion has not been installed:

    • Combustion and ventilation (excess air) requirements of gas-fired appliances, including provision of outside and inside air to account for building tightness, will be provided
    • The minimum required volume will be 50 cubic feet per 1,000 Btu/h in accordance with 2012 IRC G2407.5.1
    • If needed, additional combustion air will be provided in accordance with IRC

    Ensure adequate combustion air for operation of the appliance

    3121
    7.8103.2f
    Venting of flue gases

    Condition of venting will be inspected in accordance with Section 504 IFGC, NFPA 54, or NFPA 58 for gas water heaters or NFPA 31 for oil water heaters, and authority having local jurisdiction

    Verify proper venting of flue gases

    3122
    7.8103.2g
    Fuel supply

    Condition of fuel supply components will be checked in accordance with NFPA 31 for oil, NFPA 54 for gas, NFPA 58 for propane, or NFPA 70 National Electric Code for electric, and authority having jurisdiction

    Verify sufficient fuel to the water heater burner and element

    3123
    7.8103.2h
    Cold water supply

    Water supplied to the appliance will be of sufficient volume and pressure to be in accordance with manufacturer specifications

    Verify sufficient volume and pressure of water to the appliance

    3124
    7.8103.2i
    Discharge temperature

    Discharge temperature will be set not to exceed 120°F or in accordance with local code, whichever is lower

    Ensure safe hot water supply temperature to fixtures

    3125
    7.8103.2j
    Test the system safety and operation

    The following will be tested:

    • Safety controls (e.g., water, air pressure switches)
    • Combustion safety and efficiency
    • Operational controls
    • Fuel and water leaks
    • Unit runs through complete cycle
    • Local code requirements

    Manufacturer specifications and all relevant industry standards will be met

    Ensure system functions safely with lowest possible cost of ownership

    3126
    7.8103.2k
    Maintenance records

    Occupants will be advised to keep records of all maintenance done to their system

    Copies of or access to installation and operation manuals will be provided

    Improve chance of successful future maintenance or repair

    3127
    7.8103.2l
    Occupant health and safety

    All homes will have a carbon monoxide (CO) alarm

    Ensure occupant health and safety

    3128
    7.8103.2m
    Occupant education

    Completed work will be reviewed

    Occupants will be educated on the safe and efficient operation and maintenance of the system, including:

    • Adjustment of water temperature
    • Target temperature in accordance with local code

    Ensure occupant is informed of the safe, efficient operation and maintenance of the system

    3129

    Index

    Air sealing, 3.1001.4–3.1701.1

    attached additions
    holes, penetrations, and connection seam, 3.1701.1
    attics
    penetrations and chases, 3.1001.4
    basements and crawl spaces
    skirting manufactured homes, 3.1488.2
    ducts
    preparation
    and mechanical fastening, 3.1601.5
    for SPF application, 3.1601.2
    sealing
    air sealing system components, 3.1602.12
    air sealing system, 3.1602.11
    crossover ducts, 3.1602.9
    duct spray polyurethane foam installation, 3.1602.2
    hard and flex branch ducts, 3.1602.10
    proprietary spray application, 3.1602.3
    return–framed platform, 3.1602.13
    supply plenum (furnace to trunk duct connection) in both upflow and downflow air 
    handler configurations, 3.1602.8
    support for horizontal, suspended ducts, 3.1601.4
    floors
    floor framing
    bay windows, 3.1302.1
    penetrations
    electrical, HVAC, plumbing, gas, dryer vent, general penetrations through bottom board, 
    3.1301.1
    electrical, HVAC, plumbing, gas, dryer vent, general penetrations through flooring, 
    3.1301.2
    moisture precautions, 2.0401.1
    regional considerations, 2.0401.1a
    pier and skirting foundations—venting
    walls
    exterior wall penetrations
    exterior holes and penetrations, 3.1101.1
    interior wall penetrations
    interior holes and penetrations, 3.1101.2
    marriage wall penetrations and marriage line
    holes, penetrations, and marriage line, 3.1101.3
    windows and doors 
    maintenance, repair, and sealing, 3.1201.5
    interior storm windows, 3.1201.6
    replacement of, 3.1203.3
    replacement of cracked and broken glass, 3.1202.3
    worker safety, 2.0103.1
    Appliance exhaust vents
    clothes dryers, 6.6005.1
    Asbestos, 2.0105.4c
    Attached additions, 3.1701.1
    Attics
    attic ceilings
    fiberglass blown insulation, 4.1003.8, 4.1003.9, 4.1003.10, 4.1003.11
    moisture precautions, 2.0401.1a
    penetrations and chases, 3.1001.4
    transition walls
    flat and cathedral ceiling, 4.1088.6
    Baseload, 7.8001.1–7.8103.2
    plug load
    electronics
    entertainment and computer systems and components replacement, 7.8002.1
    laundry
    clothes dryer replacement, 7.8004.2
    washing machines, 7.8004.1
    lighting upgrade, 7.8003.1
    refrigerators and freezers
    cleaning and tuning existing, 7.8001.2
    replacement, 7.8001.1
    water heating
    installation and replacement
    on-demand appliances, 7.8102.3
    storage-type appliances, 7.8102.2
    water heater selection, 7.8102.1
    maintenance inspection
    on-demand appliances, 7.8103.2
    storage-type appliances, 7.8103.1
    water use reduction
    shower head and faucet aerator, 7.8101.1
    Basements and crawl spaces. See also Crawl spaces
    basement wall insulation
    groundwater leakage, 4.1402.3
    no groundwater leakage, 4.1402.2
    dehumidification, 2.0404.4
    installation deficiencies, 2.0111.5a
    prework qualifications, 2.0111.5
    skirting manufactured homes, 3.1488.2
    stabilization, 2.0111.5b
    Base pressure test, 2.0201.3d 
    Battery-operated CO alarm or monitor, 2.0301.2b
    Battery-operated smoke alarms, 2.0301.1b 
    Batt insulation material, 4.1303.1
    Bay windows, 3.1302.1
    Belly floor cavity insulation preparation, 4.1302.1
    Blown insulation material, 4.1303.1
    Bottom board penetrations, 3.1301.1d 
    Broken glass removal, 3.1202.3c 
    Carbon monoxide (CO)
    alarm or monitor, 2.0301.2, 5.3003.7h 
    CAZ testing, 2.0201.3g 
    in flue gas, 5.3003.14e, 5.3003.15i
    heating and cooling worker safety, 2.0105.4f
    CAZ (Combustion appliance zone) testing, 2.0201.3
    Ceilings
    attic
    fiberglass blown insulation, 4.1003.8, 4.1003.9, 4.1003.10, 4.1003.11
    hole repair, 3.1001.4d 
    Chemical safety, 2.0100.2g
    Clothes dryer exhaust venting, 6.6005.1
    Clothes dryer replacement, 7.8004.2
    CO. See Carbon monoxide (CO)
    Combustible gas detection, 2.0105.4e
    Combustion air for natural draft appliances, 2.0203.4
    Combustion analysis of gas-fired appliances (LP and natural gas), 5.3003.14
    Combustion appliance depressurization limits table, 2.0299.1
    Combustion appliance zone (CAZ) testing, 2.0201.3
    Combustion flue gas—orphaned water heaters, 2.0203.5
    Combustion safety devices
    carbon monoxide alarm or monitor, 2.0301.2, 5.3003.7h
    smoke alarms, 2.0301.1
    Combustion Safety
    combustion appliance depressurization limits table, 2.0299.1
    combustion appliance zone (CAZ) testing, 2.0201.3
    at completion of project, 2.0201.3h 
    general, 2.0201.2
    propane, natural gas, and kerosene heaters, 2.0202.1
    unvented space heaters
    propane, natural gas, and kerosene heaters, 2.0202.1
    vented gas appliances
    combustion air for natural draft appliances, 2.0203.4
    combustion flue gas—orphaned water heaters, 2.0203.5
    draft regulation—category I appliance, 2.0203.6
    worker safety, 2.0105.3
    Computer systems and components replacement, 7.8002.1
    Condensing surfaces, basement, 2.0404.4d
    Confined space safety, 2.0100.2d
    Crawl spaces. See also Basements and crawl spaces
    closing vents in, 2.0404.2a
    drying, 2.0404.2b
    drying time, 2.0404.2c 
    moisture precautions, 2.0401.1b
    preliminary dehumidification, 2.0404.2
    safety, 2.0100.2m
    Crossover ducts, 3.1602.9
    Data plate verification, 5.3003.1
    Dehumidification for dry climates and heating-dominated climates, 2.0404.4e
    Dehumidifiers
    basement, 2.0404.4a
    decommissioning, 2.0404.1c
    divided spaces, 2.0404.4b
    stand-alone, 2.0404.1
    Depressurization test, 2.0201.3e 
    Design, injury prevention through, 2.0100.2a
    Doors. See Windows and doors
    Draft regulation—category I appliance, 2.0203.6
    Drainage, 2.0402.2
    Drain pans, 7.8102.2d, 7.8102.3d 
    Ducts. See also Ventilation
    clothes dryer exhaust, 6.6005.1
    crossover ducts, 3.1602.9
    exhaust fans, 6.6002.4
    flex ducts, 4.1601.4
    insulating ducts
    vapor barriers, 4.1601.3
    kitchen range, 6.6005.2
    metal ducts, 4.1601.5
    preparation
    and mechanical fastening, 3.1601.5
    SPF application, 3.1601.2
    sealing
    air sealing system, 3.1602.11
    air sealing system components, 3.1602.12
    crossover ducts, 3.1602.9
    hard and flex branch ducts, 3.1602.10
    proprietary spray application, 3.1602.3
    return–framed platform, 3.1602.13
    spray polyurethane foam installation, 3.1602.2
    supply plenum (furnace to trunk duct connection) in both upflow and downflow air handler 
    configurations, 3.1602.8
    support for horizontal, suspended ducts, 3.1601.4
    ventilation supply
    removing supply vents from garages, 6.6188.2
    Duct spray polyurethane foam installation, 3.1602.2
    Electrical hazards
    house current, 2.0602.2
    static electric shock, 2.0602.1
    Electronics
    entertainment and computer systems and components replacement, 7.8002.1
    Emergency drain pans, 7.8102.2d, 7.8102.3d 
    Entertainment and computer systems and components replacement, 7.8002.1
    Ergonomic safety, 2.0100.2h
    Evaporative coolers, 5.3003.8
    Exhaust
    appliance exhaust vents
    clothes dryers, 6.6005.1
    kitchen range, 6.6005.2
    components
    ducts (exhaust fans), 6.6002.4
    intake grille location, 6.6002.3
    fans
    fan placement (whole house/common space exhaust only), 6.6003.6
    garage exhaust fan, 6.6003.5
    inline, 6.6003.2
    sound ratings—new fan installation, 6.6288.2
    surface-mounted ducted, 6.6003.1
    Exhaust fans, 6.6002.4
    Expansion tank installation, 7.8102.2e
    Exterior walls
    dense packing, 4.1101.5
    holes and penetrations, 3.1101.1
    Falls, trips, and slips, 2.0100.2j
    Fans
    exhaust, 6.6002.4
    fan placement (whole house/common space exhaust only), 6.6003.6
    garage exhaust fan, 6.6003.5
    inline, 6.6003.2
    sound ratings—new fan installation, 6.6288.2
    surface-mounted ducted, 6.6003.1
    Faucet and shower head aeration, 7.8101.1
    Fiberglass batts, 4.1104.1
    Fiberglass blown insulation
    installation, 4.1104.2
    in roof-over constructions, 4.1003.11
    via exterior access from top of roof, 4.1003.9
    via interior access through ceiling, 4.1003.10
    via penetrations through or below siding, 4.1104.3
    via roof side lift, 4.1003.8
    Fire safety, 2.0100.2l
    Flex branch ducts, 3.1602.10
    Flex ducts, 4.1601.4
    Floors
    floor framing
    bay windows, 3.1302.1
    manufactured housing
    belly floor cavity insulation preparation, 4.1302.1
    manufactured housing floor cavity insulation
    with batt material, 4.1303.2
    with blown material, 4.1303.1
    with spray foam material, 4.1303.3
    penetrations
    through bottom board, 3.1301.1
    through flooring, 3.1301.2
    Forced air
    commissioning of equipment
    combustion analysis of gas-fired appliances (LP and natural gas), 5.3003.14
    design
    replace return air systems that incorporate floor cavity (belly) and/or attic as the return air 
    pathway, 5.3001.3
    thermostat replacement, 5.3003.11
    equipment evaluation
    package units—repair and service, 5.3003.12
    refrigerant charge evaluation, 5.3003.13
    equipment maintenance, testing, and repair
    combustion analysis of oil-fired appliances, 5.3003.15
    data plate verification, 5.3003.1
    evaluating air flow, 5.3003.3
    evaluating electrical service, 5.3003.16
    evaluating sequence of operation, 5.3003.6
    evaporative cooler maintenance and repairs, 5.3003.8
    occupant education, 5.3003.7
    refrigerant line inspection, 5.3003.5
    ventilation
    intake for ventilation air to forced air system used for heating and cooling, 6.6102.4
    Freezers. See Refrigerators and freezers
    Fuel leak detection, 2.0201.3b 
    Garage exhaust fans, 6.6003.5
    Garage supply ducts, removing, 6.6188.2
    Gas-fired appliances, 5.3003.14
    Gas ovens, 2.0201.2d 
    Gas range burners, 2.0201.2e 
    Global worker safety, 2.0100.2
    Ground moisture barriers, 2.0403.4
    Hand protection, 2.0100.2b
    Hand tool safety, 2.0100.2i
    Hard bottom board repair, 3.1301.1c 
    Hard branch ducts, 3.1602.10
    Hardwired CO alarm or monitor, 2.0301.2a
    Hardwired smoke alarms, 2.0301.1a
    Health and safety, 1.100.1–2.0602.2
    air sealing worker safety, 2.0103.1
    Combustion Safety
    combustion appliance depressurization limits table, 2.0299.1
    combustion appliance zone (CAZ) testing, 2.0201.3
    general, 2.0201.2
    isolating combustion water heater closet, 2.0204.1
    unvented space heaters
    propane, natural gas, and kerosene heaters, 2.0202.1
    vented gas appliances
    combustion air for natural draft appliances, 2.0203.4
    combustion flue gas—orphaned water heaters, 2.0203.5
    draft regulation—category I appliance, 2.0203.6
    combustion worker safety, 2.0105.3
    electrical
    electric hazards
    house current electric hazard, 2.0602.2
    static electric shock, 2.0602.1
    global worker safety, 2.0100.2
    heating and cooling worker safety, 2.0105.4
    insulation worker safety, 2.0104.1
    interior storm windows, 3.1201.6d 
    manufactured housing prework qualifications (home installation), 2.0111.5
    material selection, labeling, and Material Safety Data Sheets (MSDSs), 2.0110.1
    moisture
    air sealing precautions, 2.0401.1
    drainage
    site improvements/conditions, 2.0402.2
    space conditioning
    basements—dehumidification, 2.0404.4
    crawl spaces—preliminary dehumidification, 2.0404.2
    dehumidifiers, stand-alone, 2.0404.1
    vapor barriers
    ground moisture barriers, 2.0403.4
    on-demand appliances, 7.8103.2a
    radon
    air sealing
    pier and skirting foundations—venting, 1.1501.4
    safety devices
    combustion safety devices
    carbon monoxide alarm or monitor, 2.0301.2
    smoke alarms, 2.0301.1
    storage-type appliances, 7.8103.1a
    ventilation worker safety, 2.0106.1
    Heat and thermal stress safety, 2.0100.2k
    Heating and cooling, 5.3001.3–5.3202.1
    forced air
    commissioning of equipment
    combustion analysis of gas-fired appliances (LP and natural gas), 5.3003.14
    design
    replace return air systems that incorporate floor cavity (belly) and/or attic as the return air 
    pathway, 5.3001.3
    equipment evaluation
    package units—repair and service, 5.3003.12
    refrigerant charge evaluation, 5.3003.13
    equipment maintenance, testing, and repair
    combustion analysis of oil-fired appliances, 5.3003.15
    data plate verification, 5.3003.1
    evaluating air flow, 5.3003.3
    evaluating electrical service, 5.3003.16
    evaluating sequence of operation, 5.3003.6
    evaporative cooler maintenance and repairs, 5.3003.8
    occupant education, 5.3003.7
    refrigerant line inspection, 5.3003.5
    thermostat replacement
    heating and cooling controls, 5.3003.11
    shading
    landscaping
    indigenous planting, 5.3201.1
    reflective roofs
    reflective coatings on metal roofs, 5.3202.1
    ventilation
    basements and crawl space walls, 6.6102.4
    worker safety, 2.0105.4
    Heat pumps, 5.3003.11f–j
    Holes. See Penetrations
    House current electric hazard, 2.0602.2
    Humidistats, 5.3003.11m
    Indigenous planting, 5.3201.1
    Inline exhaust fans, 6.6003.2
    Installation deficiencies, 2.0111.5a
    Insulation, 4.1003.8–4.1601.5
    attics
    attic ceilings
    fiberglass blown insulation for flat, bowed, or vaulted ceilings (via exterior access from top 
    of roof), 4.1003.9
    fiberglass blown insulation for flat, bowed, or vaulted ceilings (via interior access through 
    the ceiling), 4.1003.10
    fiberglass blown insulation for flat, bowed, or vaulted ceilings (via roof side lift), 4.1003.8
    fiberglass blown insulation in roof-over constructions, 4.1003.11
    transition walls
    flat and cathedral ceiling, 4.1088.6
    basements and crawl spaces
    basements and crawl space walls
    groundwater leakage, 4.1402.3
    no groundwater leakage, 4.1402.2
    climate considerations for insulating waterlines, 4.1488.1
    ducts
    duct insulation
    insulating flex ducts, 4.1601.4
    insulating metal ducts, 4.1601.5
    insulating ducts
    vapor barriers, 4.1601.3
    floors
    manufactured housing
    belly floor cavity preparation, 4.1302.1
    manufactured housing floor cavity insulation
    with batt material, 4.1303.2
    with blown material, 4.1303.1
    with spray foam material, 4.1303.3
    walls
    manufactured housing wall insulation
    fiberglass blown insulation installation (lifting siding), 4.1104.2
    fiberglass blown insulation installation (via penetrations through or behind the siding), 
    4.1104.3
    spray foam insulation in cavities above doors and windows, 4.1104.4
    stuffing cavities with fiberglass batts, 4.1104.1
    preparation
    exterior wall dense packing, 4.1101.5
    worker safety, 2.0104.1
    Intake grille location, 6.6002.3
    Interior storm windows, 3.1201.6
    Interior walls
    holes and penetrations, 3.1101.2
    Kerosene heater combustion safety, 2.0202.1
    Kitchen range exhaust venting, 6.6005.2
    Landscaping
    indigenous planting, 5.3201.1
    Laundry appliances
    clothes dryer replacement, 7.8004.2
    washing machines, 7.8004.1
    Lead paint assessment
    bay windows, 3.1302.1b 
    insulation worker safety, 2.0104.1d
    windows and doors, 3.1201.5b, 3.1202.3b, 3.1203.3b
    Leveling, 2.0402.2
    Lifting siding, 4.1104.2
    Lighting upgrade, 7.8003.1
    Marriage line, 3.1101.3
    Marriage wall penetrations, 3.1101.3
    Material safety
    material labels, 2.0110.1b
    Material Safety Data Sheets (MSDSs), 2.0110.1
    material selection, 2.0110.1a
    Material Safety Data Sheets (MSDSs), 2.0110.1
    Mercury, 1.1054b
    Mercury-based thermostats, 5.3003.11a 
    Metal ducts, 4.1601.5
    Moisture
    air sealing precautions, 2.0401.1
    space conditioning
    basements—dehumidification, 2.0404.4
    crawl spaces—preliminary dehumidification, 2.0404.2
    dehumidifiers, stand-alone, 2.0404.1
    Moisture precautions
    attics, 2.0401.1a
    crawl spaces, 2.0401.1b
    exterior water, 2.0401.1d 
    living spaces, 2.0401.1c

    Natural draft appliances, 2.0201.3

    Natural gas heater combustion safety, 2.0202.1
    New appliances, 2.0201.2b 
    Occupant education
    heating and cooling systems operation, 5.3003.7
    Oil-fired appliances, 5.3003.15
    On-demand appliances
    installation and replacement, 7.8102.3
    maintenance inspection, 7.8103.2
    Orphaned water heaters, 2.0203.5
    Outside combustion makeup air, 2.0201.2a
    Package units—repair and service, 5.3003.12
    Penetrations
    attached additions, 3.1701.1
    and chases, attics, 3.1001.4
    through bottom board, 3.1301.1
    through flooring, 3.1301.2
    Personal protective equipment (PPE)
    heating and cooling worker safety, 2.0105.4d
    worker safety, 2.0100.2d 
    Pier and skirting foundations
    air sealing, 1.1501.4
    ground moisture barriers, 2.0403.4
    Plug load
    entertainment and computer systems and components replacement, 7.8002.1
    laundry
    clothes dryer replacement, 7.8004.2
    washing machines, 7.8004.1
    lighting upgrade, 7.8003.1
    refrigerators and freezers
    cleaning and tuning, 7.8001.2
    replacement, 7.8001.1
    Polyurethane foam duct spray installation, 3.1602.2
    Potable water expansion tanks, 7.8103.1d
    Power tool safety, 2.0100.2f
    Prework qualifications (home installation), 2.0111.5
    Propane heater combustion safety, 2.0202.1
    Radon
    air sealing
    pier and skirting foundations—venting, 1.1501.4
    Reflective roofs, 5.3202.1
    Refrigerant charge evaluation, 5.3003.13
    Refrigerant line inspection, 5.3003.5
    Refrigerators and freezers
    cleaning and tuning existing, 7.8001.2
    replacement, 7.8001.1
    Relative humidity, basement, 2.0404.4c
    Respiratory protection
    insulation worker safety, 2.0104.1c
    worker safety, 2.0100.2c
    Roof-over constructions, 4.1003.11
    Safety devices
    combustion safety devices
    carbon monoxide alarm or monitor, 2.0301.2
    smoke alarms, 2.0301.1
    heating and cooling worker safety, 2.0105.4h 
    Safe work practices. See Health and safety
    Shading
    landscaping
    indigenous planting, 5.3201.1
    reflective roofs, 5.3201.1
    Shower head and faucet aerator, 7.8101.1
    Site improvements, 2.0402.2
    Skirting, 3.1488.2
    Slips, trips, and falls, 2.0100.2j
    Smoke alarms, 2.0301.1
    Soft bottom board repair, 3.1301.1b 
    Solid fuel-burning appliances, 2.0201.2f
    Space conditioning
    basements—dehumidification, 2.0404.4
    crawl spaces—preliminary dehumidification, 2.0404.2
    stand-alone dehumidifiers, 2.0404.1
    Spillage testing
    CAZ testing, 2.0201.3f 
    orphaned water heaters, 2.0203.5a 
    vented gas appliances, 2.0203.4c 
    Spray foam insulation
    in cavities above doors and windows, 4.1104.4
    in floor cavity, 4.1303.3
    Stabilization, 2.0111.5b
    Stand-alone dehumidifiers, 2.0404.1
    Static electric shock, 2.0602.1
    Storage-type appliances
    installation and replacement, 7.8102.2
    maintenance inspection, 7.8103.1
    Storm windows, interior, 3.1201.6
    Supply ducts, ventilation
    removing supply vents from garages, 6.6188.2
    Supply plenums, 3.1602.8
    Termite protection, 4.1402.3e 
    Thermal stress safety, 2.0100.2k
    Thermostats, 5.3003.11
    Transition walls, flat, and cathedral ceiling, 4.1088.6
    Trips, slips, and falls, 2.0100.2j
    Ultraviolet (UV) protection of refrigerant insulation, 5.3003.5b
    Unvented space heater combustion safety, 2.0202.1
    Vapor barriers, 4.1601.3
    Vegetation, 2.0402.2, 5.3201.1
    Vented gas appliances
    combustion air for natural draft appliances, 2.0203.4
    combustion flue gas—orphaned water heaters, 2.0203.5
    draft regulation—category I appliance, 2.0203.6
    Ventilation, 6.6002.3–6.6288.2
    exhaust
    appliance exhaust vents
    clothes dryers, 6.6005.1
    kitchen range, 6.6005.2
    components
    ducts (exhaust fans), 6.6002.4
    exhaust-only ventilation—intake grille location, 6.6002.3 fans
    fan placement (whole house/common space exhaust only), 6.6003.6
    garage exhaust fan, 6.6003.5
    inline, 6.6003.2
    sound ratings—new fan installation, 6.6288.2
    surface-mounted ducted, 6.6003.1
    supply
    components
    intake for ventilation air to forced air system used for heating and cooling, 6.6102.4
    removing supply vents from garages, 6.6188.2
    whole building
    exhaust-only system
    manufactured housing exhaust only strategies, 6.6205.1
    ventilation system
    commissioning existing exhaust or supply ventilation systems, 6.6204.1
    decommissioning existing exhaust or supply ventilation systems, 6.6206.1
    worker safety, 2.0106.1
    Vermiculite, 2.0104.1b
    Walls
    exterior
    holes and penetrations, 3.1101.1
    interior
    holes and penetrations, 3.1101.2
    manufactured housing wall insulation
    fiberglass blown insulation, 4.1104.2, 4.1104.3
    spray foam insulation in cavities above doors and windows, 4.1104.4
    stuffing cavities with fiberglass batts, 4.1104.1
    marriage wall penetrations and marriage line, 3.1101.3
    preparation
    exterior wall dense packing, 4.1101.5
    Washing machines, 7.8004.1
    Water heater closet, 2.0204.1
    Water heater selection, 7.8102.1
    Water heating
    installation and replacement
    on-demand appliances, 7.8102.3
    storage-type appliances, 7.8102.2
    water heater selection, 7.8102.1
    maintenance inspection
    on-demand appliances, 7.8103.2
    storage-type appliances, 7.8103.1
    orphaned water heaters, 2.0203.5
    water use reduction
    shower head and faucet aerator, 7.8101.1
    Waterline insulation, 4.1488.1
    Water use reduction
    shower head and faucet aerator, 7.8101.1
    Whole building ventilation
    commissioning existing exhaust or supply ventilation systems, 6.6204.1
    decommissioning existing exhaust or supply ventilation systems, 6.6206.1
    manufactured housing exhaust-only strategies, 6.6205.1
    Windows and doors 
    interior storm windows, 3.1201.6
    maintenance, repair, and sealing, 3.1201.5
    replacement of, 3.1203.3
    replacement of window glass, 3.1202.3
    Worker safety. See Health and safety