CalCoat-127® is a proprietary blend of hydraulic cement, calcium silicate and inorganic mineral fibers that provides a smooth finish over high-temperature insulation. It offers protection from corrosion under insulation, and no wire mesh is required. It can also be used as a general-purpose insulating cement, as it is easy to trowel and resists wetting after initial application. One bag will cover a minimum of 30 sq. ft. at 1" (2.8 square meters at 25 mm) thick. CalCoat-127 can be painted with water/oil-based paints.