WALLcontrol^™ Polyiso Glass-Faced Insulation is a high-performance rigid wall insulation board with a high R-value, Class A foam core, and durable coated glass facers. One side of the product is dark gray for use in open joint rainscreen applications. Designed to be used as exterior continuous wall insulation, it can be adhered or mechanically attached. Available in 4 ft. x 8 ft. and 4 ft. by 9 ft. sizes, with thickness ranging from 1 in. to 4 in., and scored board options which are scored at 16 in. to 24 in.