100% acrylic interior and exterior primer for all surfaces. Mildew resistant, quick dry, spatter proof with great flow and leveling. Formulated to suppress most stains. Use on new or previously painted wood, plywood, drywall, ceiling tile, Formica®, Masonite®, ceramic tile, cured plaster and wall coverings. For exterior use on new or previously painted wood, aluminum, hardboard, vinyl siding, shingles, shakes, concrete, masonry, brick and non-ferrous metal surfaces.