Products / Duro-Guard ISO NB

Duro-Guard ISO NB is a nail-base roof insulation panel of closed-cell polyisocyanurate foam bonded to fiber-reinforced facers on one side and 7/16- or 5/8-inch APA-rated OSB, or plywood, on the other. The data sheet states it is not a structural panel and is for fully supported structural decks, lists uses under standing seam metal roofs and in Duro-Last mechanically attached, adhered, Duro-Bond and metal retrofit systems, and gives the foam core as ASTM C1289 Type II, Class 1, Grade 2 or Grade 3.