Coating for roof surfaces
AssigneeThe Celotex Corporation
InventorsStanley C. Kyminas, John C. Phillips, Bernard J. Einhaus
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Abstract
A process of forming a durable waterproof coating on a substrate comprising (a) applying to the surface of the substrate an aqueous dispersion comprising at least one film-forming polymer, pigment material including clay in an amount sufficient to improve the adhesion of the coating to the substrate, and water, the pigment volume concentration of the dispersion being greater than 15, and (b) allowing the dispersion to dry on the surface.
Claims20
A process of forming a durable waterproof coating on the exterior surface of a substrate for protection against water ponding and long-term weathering comprising (a) applying to the surface of the substrate an aqueous dispersion comprising at least one synthetic film-forming polymer, pigment material including kaolin clay, the kaolin clay being present in an amount sufficient to improve the adhesion of the coating to the substrate and the pigment material having an average particle size less than 200 microns, and water, the pigment volume concentration of the dispersion being greater than 15%, and (b) allowing the dispersion to dry on the surface.
An aqueous composition for application to the exterior surface of a substrate to form a durable waterproof coating on the substrate for protection against water ponding and long-term weathering comprising at least one synthetic film-forming polymer, pigment material including kaolin clay, the kaolin clay being present in an amount sufficient to improve the adhesion of the coating to the substrate and the pigment material having an average particle size less than 200 microns, and water, the pigment volume concentration of the composition being greater than 25%.
In combination with a roof substrate, a thin surfacing layer affixed directly to the exterior surface of the substrate for protection against water ponding and long-term weathering and comprising pigment material and at least one synthetic film-forming polymer binder, the pigment material including kaolin clay, the kaolin clay being present in an amount sufficient to improve the adhesion of the layer to the substrate, the pigment material having an average particle size less than 200 microns and the pigment volume concentration of the layer being greater than 15%.
Dependencies are inferred from the claim text.