Polyiso foam boards are available in a range of compressive strengths meeting various marketplace requirements.
Polyisocyanurate insulation in attic.
Rmax thermasheath 3 2 in.
Compressive strength refers to the ability of a rigid foam plastic board to resist deformation and maintain its shape when subjected to a force or load.
Rmax thermasheath 3 1 in.
The attics are about as simple as can be with no dormers or other obstructions.
A 1 5 inch thick polyiso panel is rated r 9 that s almost double the rating per inch of typical attic insulations.
R 13 1 polyisocyanurate rigid foam insulation board.
These facings provide strength improve rigidity and enhance thermal performance.
R 6 polyisocyanurate rigid foam insulation board.
R5 radiant acoustic insulation kit stc 19 5 piece price.
Polyisocyanurate board insulation is most commonly supplied as 1 2 x 2 4 m or 1 2 x 2 7 m 4 x 8 ft or 4 x 9 ft sheets in various thicknesses.
As a spray foam alternative i m considering using continuous rigid foam along the 32ft long x 7ft slope in my side attic and just spray foaming in the lower joist bays and places where taping is difficult.
I will need 8 of polyiso to meet my disired r value r 48 while keeping the 2x4 rafter bays wide open for.
By blocking thermal bridging a polyiso continuous insulation system increases the overall thermal performance of a wall assembly and a building.
Polyisocyanurate insulation is a type of insulated foam board that offers a high level of thermal resistance and cold weather protection for your home.