SPEC MIX Fiber Base Coat (FBC) is a dry, pre-blended cement based stucco engineered with proprietary admixtures and fibers that are computer batched for consistency and performance unmatched by traditional field mixed stucco. SPEC MIX FBC has a custom blended sand gradation that increases the wall flexural strength while reducing cracking and crazing. The custom sand gradation also provides excellent workability and finishing properties for the applicator over a traditional field-mixed source. Designed for both One Coat and traditional Scratch & Brown Coat systems, SPEC MIX FBC reduces shrinkage and increases long term durability and bond strength of the application. Applicable Standards: ASTM C144, ASTM C150, ASTM C157, ASTM C207, ASTM C348, ASTM C595, ASTM C847, ASTM C897, ASTM C926, ASTM C1063, ASTM C1328, ASTM E72, ASTM E119, ASTM G53, ICC-ES AC11, LEED