Install Rigid Foam Insulation in Basement Video - YouTube Nov 5, 2008 . Installing Rigid Foam insulation board is easy. Watch this Owens Corning video . Foam board actually is breathable and allows moisture through it's material. I'm assuming you need a . Can i use the 2 inch rigid foam insulation and also a 3.5 regular insulation in the stud wall ? So it would be, block wall-..