Rosco Flexcoat is a flexible, non-toxic, water-based coating for polyurethane and polystyrene foam. Its 100% acrylic formulation provides excellent adhesion to a wide variety of substrates. Flexcoat contains no plasticizers, so it will not become brittle with age or exterior exposure. It is compatible with all Rosco paints used either as tints or surface coatings. Flexcoat is weather-proof and fire retardant, providing one coat protection for all your theatrical applications. Coverage varies with thickness of application, approximately 250-300 sq. ft. per gallon.