USES. To level surfaces in new construction, remodeling work and corrective work. Used as a subflooring finish for carpet, tiles, epoxy coatings, and other floor surfacing systems. Can be applied over concrete, wood, steel, ceramic tile and other sound, rigid flooring. Compatible with common adhesivesFEATURES:. Mixes with water only. Pumpable/pourable. Water resistant. Takes foot traffic after 6 to 8 hours. Eliminates troweling. Quick installment. Not a gypsum product. Properties similar to concrete. No sanding or grinding when properly installed. Can be featheredged. Hard surface. Low shrinkageCOVERAGE:. 22.7 KG (50lb) bag will cover approximately 20 sq. ft. at 1/4" thick