Products / Securock Brand UltraLight Coated Glass-Mat Roof Board

Securock UltraLight Coated Glass-Mat Roof Board is the coated-mat version of USG's lightweight glass-mat gypsum roof board, made for adhered single-ply and modified bitumen systems where bond and low absorption matter, and also used as a fire and thermal barrier. The submittal sheet prints Class A unlimited slope to UL790 in 1/4, 1/2 and 5/8 inch thicknesses, flame spread 0 and smoke developed 0 (ASTM E84), a noncombustible core, FM approval to FM 4450 and FM 4470 with FM Class 1, manufacture to ASTM C1177, 700 to 1,000 psi nominal compressive strength and 4 by 4 or 4 by 8 foot boards. USG's coated glass-mat warranty runs 2 years from installation.