STYROFOAM R-10 2-in x 4-ft x 8-ft Square Edge Faced Polystyrene Garage Door Foam Board Insulation with Sound Barrier

STYROFOAM Brand Square Edge Extruded Polystyrene Foam (XPS) Insulation has more than 60 years of proven performance in wet environments. The closed-cell structure of STYROFOAM Brand Square Edge Extruded Polystyrene Foam (XPS) Insulation resists water pickup, enabling it to retain a high R-value over time – a necessary property in wet, below-grade commercial or residential foundation applications.