MuleHide Poly ISO Tapered Insulations consist of a closed-cell polyisocyanurate foam core, manufactured on-line to a high-performance coated glass facer on both sides (CGF). These insulations are compatible with MuleHide membranes and accessories and are available in 20 and 25 psi densities. MuleHide Poly ISO with Coated Glass Facer can be used in ballasted, mechanically attached, and fully adhered single-ply roofing systems. The boards may be installed over approved decks and substrates in new construction, tear-offs, and recover (retrofit) projects. They are rated for use in UL Class A and FM Class 1 assemblies.