Marbalease® Polymer Concrete Release is a fast-drying liquid wax polishing compound recommended as a low-cost mold release wax for use with polymer concrete (polycrete). Marbalease® Polymer Concrete Release is used with polyester or vinylester resins on fiberglass or metal molds but can also be used as a general purpose mold release agent for reinforced thermoset plastics where a smooth post-production finish is not required.Marbalease® Polymer Concrete Release is a new, simple, effective, and economical, specially developed liquid wax release agent for the polymer concrete (polycrete or GRC) industry. Apply Marbalease® Polymer Concrete Release with a brush or cloth, no need to buff, dries quickly enabling fast cycling of molds. Suitable for metal or polyester molds and for use with polyester and vinylester resins or with traditional concrete. Supplied in 5-gal. (18.9L) pails.