Does the building code permit me to place polyisocyanurate sheets as my top attic floor insulation layer? I realize that might not be ideal because of the R value roll-off… Does the building code permit me to place polyisocyanurate sheets as my top attic floor insulation layer? I realize that might not be ideal because of the R value roll-off…Read MoreGreenBuildingAdvisor
Polyisocyanurate sheet as top attic insulation layer for radiant barrier
by | Feb 17, 2023 | Uncategorized | 0 comments
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