Gallon, Waterproofing Silicone Sealer, Crystal Clear, Water Based Toned Translucent Advanced Technology Silicone Sealer, Protects From Weather, Water & Sun Damage Longer Than Most Waterproofers, Use On Interior Or Exterior Wood, Concrete, Brick & Masonry As Well As Stone & Unglazed Tile, Great For Decks, Fences, Siding, Shakes, Logs, Sidewalks, Basements, Driveways Or Patios, Covers Approximately 150 SQFT Based On Porosity Of Substrate.