Folks, My primary line of work is roofing consulting and we work with "foam" insulations. This is what we know-The
white bead board, or expanded polystyrene, when introduced to heat and water will absorb huge amounts of moisture. The pink and blue boards, or extruded polystyrene, will not. I'm planning on yanking the floor out of my recently purchased 66 Sunchief this winter, so at this ...