Redefining the way we build Class A Flame-Spread (ASTM E84)1 Zero Flame-Spread Index (ASTM E84)1 Zero Smoke Developed (ASTM E84)1 Strong, Stiff, Quiet Floors Mold and Mildew Resistant (ASTM G21)2 Non-combustible (per ASTM E136)3 UL Listed Fire-Rated Assemblies Dimensionally Stable when Wet STC and IIC values for dwelling separations