Products / Duro-Guard ISO HD Composite

Duro-Guard ISO HD Composite is a 1/2-inch high-density polyisocyanurate cover board factory-laminated to Duro-Guard ISO III roof insulation, used in place of a separate cover board in Duro-Last mechanically attached, adhered, Duro-Bond and metal retrofit roof systems. The top layer prints 80 to 110 psi compressive strength and the insulation layer is ASTM C1289 Type II, Class 1, Grade 2 or Grade 3. The data sheet lists UL 1256, UL 790 and UL 263 classifications and FM 4450 and 4470 approvals.