Products / Mule-Hide Poly ISO 1-HD

A 1/2-inch, 100 psi high-density polyisocyanurate cover board with coated glass fiber felt facers, used over roof insulation or existing membranes under single-ply (ballasted, mechanically attached or fully adhered) and modified bitumen systems. The product page lists an R-value of 2.5, FM 1-90 with 16 fasteners per 4 by 8-foot board, and an FM SH-1 hail rating achievable with certain membranes. It can be attached with approved fasteners and plates or low-rise foam adhesive.