FOAM BOARD OR RIGID FOAM INSULATION Foam board or rigid foam made from materials like polystyrene, polyisocyanurate, or polyurethane, are renowned for their high heat resistance. It’s versatile, ...
By going with helical piers instead of a concrete slab, our site required no preparation other than laying out the ... On top of the GoBoard, we set in 1-1/2-in.-thick rigid foam board insulation and ...