Products / IB Energy Board II

IB Energy Board II is polyisocyanurate roof insulation with a closed-cell foam core bonded to non-asphaltic, fiber-reinforced organic felt facers, in 4 x 4 ft and 4 x 8 ft panels with LTTR values from 5.7 to 26.8 depending on thickness. It is offered at 20 psi (Grade 2) or 25 psi (Grade 3) under ASTM C1289 Type II Class 1. The TDS lists FM 4450/4470 approval, Miami-Dade County and Florida (FL2534) approvals, and UL 263, UL 790, UL 1256 and UL 1897 classifications. A tapered version, IB Energy Board II Tapered, is published on its own TDS in a range of slopes.