ProtectoR HD High Density Polyiso Cover Board features Grade 1 compressive strength and an R-value of 2.5. Includes a closed cell polyiso foam core and inorganic coated glass facers. Resists moisture, hail, wind uplift and puncture.
Uses up to 50 percent fewer fasteners than other HD polyiso cover boards to achieve FM I-90 performance. For example, only eight fasteners are required for a 4- by 8-foot board with an adhered reinforced membrane over a minimum 22 ga steel or structural concrete deck.