4.1005.2a
Subfloor or drywall will be removed to access cavities as necessary, including inaccessible knee-wall attic floor spaces
Insulation will be adequately marked for depth a minimum of every 300 square feet of attic area, with measurement beginning at the
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
All electrical boxes will be flagged to be seen above the level of the insulation
Open electrical junctions will have covers installed
Insulation dams and enclosures will be installed as required
Access the workspace
Verify uniformity of insulation material
Provide location of electrical boxes for future servicing
Prevent an electrical hazard
4.1005.2b
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
Existence of
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
material in line with the knee walls will be installed or verified when dense packing
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
material will not bend, sag, or move once dense packed
Hold
dense pack
Dense pack
The process of installing loose-fill insulation to reduce air flow and perform to a stated R-value
in place
4.1005.2c
All insulation will be installed to the minimum unsettled depth and the maximum coverage per bag to reach a consistent depth for desired R-value indicated on the manufacturer's coverage chart.
Reduce heating and air conditioning costs
Improve comfort
Minimize noise
4.1005.2d
A dated receipt signed by the installer will be provided that includes:
Insulation type
Coverage area
R-value
Installed thickness and settled thickness
Number of bags installed in accordance with manufacturer specification
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
4.1005.2e
Documentation of material and R-value will be provided to occupants
Provide occupant with documentation of installation
