4.1003.5a
Installation Insulation will be installed to prescribed R-value in accordance with manufacturer specifications
SPF
SPF
Spray polyurethane foam
will be applied to desired thickness, using pass thickness maximum as indicated by manufacturer, onto roof sheathing between rafters or trusses
When desired, underside of rafters or trusses will be covered with
SPF
SPF
Spray polyurethane foam
to provide layer of continuous insulation
Upper vent openings will be covered with
SPF
SPF
Spray polyurethane foam
, including ridge, roof, and gable that are covered with a substrate
In colder climates (
IECC
IECC
International Energy Conservation Code
Zones 5-8),
SPF
SPF
Spray polyurethane foam
will be installed to a thickness of least Class II
vapor retarder
Vapor retarder
A material that slows the passage of water vapor and contains a perm rating above 1
or have at least Class II
vapor retarder
Vapor retarder
A material that slows the passage of water vapor and contains a perm rating above 1
coating or covering in direct contact with the underside of the
SPF
SPF
Spray polyurethane foam
Ensure complete and consistent coverage throughout roof plane
Eliminate cracks, gaps, and voids
Improve structural integrity of roof deck (closed cell
SPF
SPF
Spray polyurethane foam
only)
Ensure alignment of 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
4.1003.5b
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
4.1003.5c
Occupant education Documentation of material and R-value will be provided to occupant
Provide occupant with documentation of installation