Products / GenFlex GL ISO Polyiso Roof Insulation

GenFlex GL ISO is a flat and tapered polyiso roof insulation board with a closed-cell foam core laminated to black glass-reinforced mat facers on both faces. Boards are 4 ft x 4 ft or 4 ft x 8 ft, from 0.5 in to 4.5 in thick, with 20 psi compressive strength standard and 25 psi by special order. The data sheet lists ASTM C1289 Type II Class 1, UL Classified to UL 1256 and FM Class 1 Approved, with an HCFC-free blowing agent. It may be fastened with GenFast fasteners and plates, set in Quick Dual insulation adhesive, or set in hot asphalt when a cover board is used.