Add products from the catalog to build your quote.
FOAMULAR® 150 (15 PSI) and FOAMULAR® 250 (25 PSI) are Owens Corning's standard-duty extruded polystyrene boards for wall sheathing, basement walls, crawlspaces, and under-slab applications. Available in R-3 through R-20, ½ in. to 4 in. thick. Authorized Owens Corning® distributor.