Products / Duro-Guard ISO II

Duro-Guard ISO II is a closed-cell polyisocyanurate roof insulation board with integrally laminated fiber-reinforced facers, made in flat and tapered 4 by 4 foot panels for Duro-Last mechanically attached, adhered, Duro-Bond and metal retrofit roof systems. It is offered as ASTM C1289 Type II, Class 1, Grade 2 (20 psi) or Grade 3 (25 psi), with taper slopes of 1/8, 1/4 and 1/2 inch per foot. The data sheet lists UL 1256, UL 790 and UL 263 classifications and FM 4450 and 4470 approvals, and states the blowing agent has zero ozone depletion potential.