Loose Fill to Capacity

Detail ID 4.0103.8
Topic
Attics
Subtopic
Attic Floors - Unconditioned Attics
Desired Outcome

Continuous, contiguous, safe, and compliant thermal barrier

SF Single Family Site-Built Housing
MH Manufactured Housing
MF Multifamily Housing

Specifications

  • SF
  • MH
  • MF
Specification Objective

Verify that installation area is free of:

active water leaks, fuel leaks (i.e., gas, oil, propane), and pest intrusions

energized or undammed knob and tube wiring

uncovered electrical junctions

improperly terminated devices (ventilation fans, dryers, plumbing stacks, condensate lines, combustion appliance flues/chimneys, etc.)

unshielded high-temperature devices (non-IC rated recessed lights, chimneys, flues, vents, etc.) unless they are zero clearance devices

insulation escape openings

Verify that installation area:

is intact, able to support insulation weight, and air sealed

Ensure space can be safely insulated

  • SF
  • MH
  • MF
Specification Objective

Setup a dust control enclosure for all interior access locations that limits insulation and construction dust exposure to the occupant and occupant belongings

Prevent occupant exposure to construction dust

  • SF
  • MH
  • MF
Specification Objective

Select insulation materials that have a flame spread and smoke development index of 25/450 or less when tested in accordance with ASTM E84 or UL 723

Select fire safe insulation

  • SF
  • MH
  • MF
Specification Objective

Install blown insulation to maximum R-value from attic floor to ceiling to full capacity without dense packing, but without voids

Complete and consistent insulation coverage

  • SF
  • MH
  • MF
Specification Objective

Install closure system over all access holes that is airtight, durable, and aesthetically pleasing

Airtight, durable, and aesthetic access closure

  • SF
  • MH
  • MF
Specification Objective

Post a dated receipt signed by the installer that minimally includes: Installed insulation type, coverage area, installed thickness, minimum settled thickness, installed R-value, and number of bags installed

Comply with 16 CFR 460.17 and document contract compliance