MuleHide Poly ISO Flat Insulations feature a closed-cell polyisocyanurate foam core manufactured in-line with a premium-performance coated glass facer (CGF) on both sides. These insulation boards are compatible with MuleHide membranes and accessories and are available in 20 psi 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 insulation boards may be installed over approved decks and substrates in new construction, tear-off, and recover (retrofit) projects. They are rated for use in UL Class A and FM Class 1 assemblies.