Ready to use, repairs holes and cracks in concrete and plywood floors prior to installing tile or other flooring. Smooths and fills minor dips and imperfections. Surface must be structurally sound, clean, dry, and free from contaminants. Use over concrete, cement backerboards, ceramic tile, exterior grade plywood, and vinyl flooring. Do not use as a wear surface. For interior use only. Protected with MoldGard Technology to resist mold and mildew growth. May be smoothered or featheredged. Fills greater than 1/4" deep require 2 or more applications. Wait 4 hours before tiling; longer for deeper fills. Quickly clean tools with soapy water. Pail.