Serveon Sealants H2Seal H2100 Stone Sealer - Professional Grade for Natural Stone, Grout, Brick, Tile and Artificial Stone (1 Gallon, Stone Sealer) FAST DRYING - Ready for Foot Traffic 1 Hour After Application - LONG LASTING - 3 to 5 Years Between Applications EASY APPLICATION - Other Sealers Can Cause a White Film if Even Slightly Over-Applied - H2Seal Eliminates the Need for Professional Application USES LESS BUT SEALS BETTER Than Other Sealers - Deep Penetration into Stone with ONE Coat - Up to 450 Sq Ft of Coverage Per Gallon LENGTHENS STONE LIFE While Retaining Natural Look - Low Odor - Inside and Outside Use - Resists Moisture (Including SALTWATER), Stains, Mold, Fungus, and Algae APPLICATIONS - For Slate, Travertine, Flagstone, Limestone, Sandstone, Cantera, Quartzite, River Rock, Concrete, Stucco, Grout, Mortar, Non-Glazed Brick, Artificial Stone and Unpolished/Honed Granite/Marble