The Epoxy Undercoat is a paint we like to use on our substrate before pouring epoxy. Compatible with MDF, Plywood, and other porous materials. Our 1 Quart (32 fluid oz. or 946ml) covers 40 Square Feet (3.7m2). Fast Drying, No Ammonia. Select the appropriate colour to compliment your job. For example, a black undercoat would be best for a black marble project, or the white undercoat for a white marble project.