Powerdeck F from Recticel Insulation is a closed cell, rigid PIR foam insulation board for use on warm flat roofs under built-up felt, mastic asphalt and approved single-ply membrane waterproof ...

Foam board insulation is easy to use and a great DIY way to add some insulation. It comes in standard-size 4×8 sheets and smaller sizes, in thicknesses from 1/4-in. to two inches. Some types of ...

4. Foam Board Insulation Foam boards, also known as insulating boards or rigid foam panels, are firm structures used to reduce the amount of heat conducted through wood, wall studs and roofs ...

R-values are additive, so any insulation you add to the outside of your house will improve its overall R-value—and a single inch of foam insulation can increase the R-value of your home by 5.

Spray foam insulation has been used to stop heat escaping from roofs, lofts and attics for decades and comes in two forms. Closed cell spray foam is rigid once set. It is a better thermal ...