Products / WeatherBond XFP HD Plus Cover Board

An FM-approved, 1/2 inch high-density polyiso cover board for fully adhered systems, made with coated glass facers and a scrim on the bottom, in 4 by 4 and 4 by 8 foot panels. The bulletin says 8 fasteners per 4 by 8 board meet FM 1-90, lists an R-value of 2.5, an FM severe hail rating, ASTM C1289 Type II, Class 4, Grade 1 (109 psi max) and FM 4450/4470 Class 1 approval, with manufacture in Smithfield, PA, Franklin Park, IL and Tooele, UT.