Polyisocyanurate Insulation In Attic

Ideally your attic hatch insulation will match roughly the r value of the rest of the attic insulation so the almost double value provides a handy guide to the thickness of your polyisocyanurate insulation.

Polyisocyanurate insulation in attic. By blocking thermal bridging a polyiso continuous insulation system increases the overall thermal performance of a wall assembly and a building. R 13 1 polyisocyanurate rigid foam insulation board. R 6 polyisocyanurate rigid foam insulation board. 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.

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. The attics are about as simple as can be with no dormers or other obstructions. 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. Polyiso foam boards are available in a range of compressive strengths meeting various marketplace requirements.

These facings provide strength improve rigidity and enhance thermal performance. R5 radiant acoustic insulation kit stc 19 5 piece price. A polyiso continuous insulation system keeps energy and heat loss to a minimum increasing the building s energy efficiency and leading to lower monthly operating costs. Polyisocyanurate insulation is a type of insulated foam board that offers a high level of thermal resistance and cold weather protection for your home.

Rmax thermasheath 3 2 in. A 1 5 inch thick polyiso panel is rated r 9 that s almost double the rating per inch of typical attic insulations.