Rigid Insulation Styrofoam SM30 PSI Shiplap - Extruded Polystyrene (XPS) - 1" x 2' x 8'

DuPont Styrofoam Brand SM30 Extruded Polystyrene (XPS) Foam Insulation is a versatile, multipurpose extruded polystyrene board that fits the needs of the commercial and residential foundation and slab market. With Styrofoam Brand SM30, the freeze-thaw cycling of the foundation wall is minimized, reducing the possibility of cracking. And a warmer foundation wall reduces the potential for condensation and adds to the thermal mass of the building.