Owens Corning Foamular® Extruded Polystyrene Foam Board Insulation 1" x 4' x 8' R-5

Owens Corning® FOAMULAR® extruded polystyrene (XPS) insulation is a closed-cell, moisture-resistant rigid foam board with excellent long-term stable insulating performance and durability. FOAMULAR® XPS is the right insulation for a wide variety of exterior and interior applications for commercial and residential projects.