Atlas Roofing Corp. designed its ACFoam-HS CoverBoard for use on built-up, modified-bitumen, and single-ply-membrane roofing systems. With an R-value of 2.5 per 1/2"-thickness, the cover board’s closed-cell polyisocyanurate foam provides a compressive strength of 90 psi. Available in 4'-by-4' and 4'-by-8' panels, the product has FM approvals for severe hail and foot-traffic resistance as well as wind uplift resistance from FM 1-60 to 1-210 in fully adhered roof systems. It is Greenguard certified for microbial resistance. • atlasroofing.com
