Anvil Aqua Seal Waterproofer Bonding Primer #235 Acrylic Clear Penetrating Sealer (5 Gallon) LONG LASTING PROTECTION: Aqua Seal 235 fast drying, water clean-up, environmentally friendly, multipurpose penetrating sealer primer waterproofer for vertical surfaces. Provides a tough and flexible film with excellent scrub resistance. Mold & mildew resistant. USAGE: Aqua Seal protects and seals vertical surfaces of Brick, Stucco, Concrete, Grout, Stone, Plaster, Drywall, Adobe, Simulated Brick, Metal, Chalky Surfaces, Terra Cotta Roof Tiles, Asphalt Shingles, Aluminum & Vinyl Siding, Pottery and many other nonporous surfaces. Great primer when paired with Anvil Deck-A-New Resurfacer Paint. RECOMMENDED PREPARATION: Remove all dirt, efflorescence, grease, oil, waxes, release agents and peeling pain. Repair all voids, cracks, surface breaks, excessive mortar shrinkage and crevices. Elimination of cascading or ponding water must be addressed prior to Aqua Seal application. APPLICATION: Covers 80-300 sq. ft. per gallon depending on surface porosity. For best results apply with a low-pressure garden sprayer or airless paint sprayer. A minimum of 2 liberal saturated coats is always recommended. Aqua Seal applies milky white to aid in even application, but dries clear. Easy to apply and is soap and water clean-up. See product description for further preparation and application details.