4.1088.9 Tenting, Air Sealing, and Insulating Wet Sprinkler System Components in Unconditioned Attic Spaces

Topic: 
Attics
Subtopic: 
Special Considerations
Desired Outcome: 
Continuous air and thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow that does not compromise the sprinkler system
For supporting material, see Referenced Standards.
TitleSpecification(s)Objective(s)
4.1088.9a
Worker safety

All worker safety specifications will be in accordance with SWS 2.0100.3 Worker Safety

Ensure worker safety, especially in regard to fall protection considerations and contaminants found in demolition, such as asbestos, lead, polychlorinated biphenyls, etc.

4.1088.9b
Occupant safety

An occupant safety plan will be prepared and implemented

Ensure occupant safety

4.1088.9c
Pre-inspection

Conduct pre-inspection in accordance with SWS 2.0100.4 Work Area Inspection and Stabilization

Gaps, cracks, and holes in fire separations located within the work area will be visually identified and incorporated into air sealing work scope, including those that span two conditioned or unconditioned spaces

Where drawings are available that identify specific fire-resistance ratings (i.e., 1 hour, 2 hour), materials and methods will be employed to preserve or restore such rating

Where drawings are unavailable or do not identify specific fire-resistance ratings, the fire-resistance rating of the assembly may be inferred from the current construction (i.e., single 5/8 sheetrock, concrete masonry unit), and materials and methods employed will be consistent with restoring or preserving such inferred fire-resistance rating

Repairs necessary to stabilize work areas and protect or preserve integrity of energy improvement will be completed before subject work begins

Insulation will not be installed if moisture-related issues are not resolved

Ensure and preserve the integrity of fire separations

Ensure a durable, continuous air and thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow

4.1088.9d
Sealant selection

Sealants will be compatible with their intended surfaces and applied in accordance with manufacturer specifications

Selection will be durable, pest resistant, and have a weather-appropriate seal

Indoor sealants will be low volatile organic compound ( VOC VOC Volatile organic compound ) products that meet independent testing and verification protocols, such as Green Seal GS-36, "GREENGUARD Children and Schools," or comparable certifications

Fire-resistance rated assemblies will be provided with sealants permitted by the authority having jurisdiction and adopted building code

Prevent intrusion of moisture and pests into the sealed assembly

Prevent exposing workers or occupants to excessive VOC VOC Volatile organic compound levels

Ensure sealant meets or exceeds the performance characteristics of the assembly and is compliant with local fire code requirements

4.1088.9e
Installation

When tenting is required, an airtight, rigid, and insulated enclosure will be installed around entire sprinkler system exposed within the attic

Enclosure will be sealed to the existing attic 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

Fire-rated materials will be used when applicable

Insulation will be installed on top of enclosure to the same R-value as the rest of the attic or rigid insulated enclosure will have an equivalent R-value as the rest of the attic

Align insulation 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

Create insulated enclosure that prevents sprinkler system from freezing