4.1301.10a
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
Repair moisture-related issues
Provide a safe and stable work environment
4.1301.10b
Health and safety concerns will be addressed for occupants, workers, and repair materials in accordance with
OSHA
OSHA
U.S. Occupational Safety and Health Administration, www.osha.gov
standards (
OSHA
OSHA
U.S. Occupational Safety and Health Administration, www.osha.gov
1926, 1910)
Prepare and isolate the area in accordance with health and safety standards for the application and materials (e.g., extreme temperatures, lead, asbestos, carbon monoxide)
Work lighting, work platform, and adequate ventilation will be provided
Provide a safe working environment
Provide a safe indoor environmental quality working environment
Provide effective repair access
4.1301.10c
Sealing between conditioned space and unconditioned space will be completed before insulating
Ensure airtight
envelope
Envelope
The separation between the interior and exterior environments of a building that includes a combination of air and thermal barrier
Prevent leakage
4.1301.10d
Insulation will be installed to at least prescribed R-value
Insulation will be installed in contact with subfloor without gaps, voids, compressions, misalignments, or wind intrusions
If vapor retarders are used, they will be installed consistent with local climate/code requirements
Prevent potential fire chases
Provide effective R-value
Prevent excessive vapor migration into the floor assembly and/or conditioned space
4.1301.10e
dense pack
Dense pack
The process of installing loose-fill insulation to reduce air flow and perform to a stated R-value
Insulation will completely fill the cavity space within the joists or trusses
Minimize sagging, gaps, and voids
4.1301.10f
Rigid insulation will be mechanically fastened to the bottom of the subfloor or at the bottom of the joists or trusses
If attached at the bottom of the joists or trusses, rigid insulation will be attached at the exterior perimeter/band
Insulation will be installed either as in-fill or at the bottom of the joists. Where rigid insulation is installed between joists, the perimeter of each joist bay will be air sealed with appropriate sealants to prevent air bypasses around rigid insulation materials
Rigid foam plastics used as insulation will incorporate a thermal and
ignition barrier
Ignition barrier
Any layer of material that protects another from catching fire due to heat or spark
, as required by the building code
A continuous
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
will be installed below the insulation and to the exterior
Minimize convective loops
Prevent freezing of plumbing pipes
Ensure
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
is aligned with the insulation
4.130.10g
SPF
SPF
Spray polyurethane foam
)
SPF
SPF
Spray polyurethane foam
will be applied to bottom side of subfloor between floor joists and all rim/band joists
Spray applied foam products will incorporate a thermal and
ignition barrier
Ignition barrier
Any layer of material that protects another from catching fire due to heat or spark
as required by the building code
Insulation will be installed by foam installers
Minimize convective loops
4.1301.10h
All plumbing or mechanical ductwork will be enclosed within the insulated space and will have sufficient insulation on the exterior side
Prevent freezing of plumbing pipes
4.1301.10i
Batts will be secured with physical fasteners
Ensure insulation remains in contact with subfloor
4.1301.10j
A continuous rigid barrier, suitable to withstand weather, moisture, and pest contact, and with a fire-resistance rating equal to the resistance rating of the original floor assembly will be mechanically fastened to underside of floor assembly
Protect insulation
4.1301.10k
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
