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.