Products / Flex HDCB II

A high-density polyisocyanurate cover board with a closed-cell foam core bonded to inorganic coated glass facers (CGF) on both sides, made 0.5 inch thick in 4 by 8 foot and 4 by 4 foot panels, with 80 psi minimum (up to 110 psi) compressive strength and an R-value of 2.5. It is used in mechanically attached, fully adhered and self-adhered single-ply roofing systems. The data sheet lists ASTM C1289 Type II Class 4 Grade 1, CAN/ULC 704.1, UL 1256, UL 790 and UL 263 classifications, FM 4450/4470, an FM 4473 SH-1 severe hail rating, and UL Class B over combustible decks with UL classified membranes. It states the board is backed by a Limited 20-Year Thermal Warranty.