511 Quartz Counter Top Sealer is an impregnating sealer designed for the protection of all quartz and medium to dense porous surfaces. 511 Quartz Counter Top Sealer forms an invisible barrier that is resistant to moisture and stains while allowing vapor to escape. 511 Quartz Counter Top Sealer is not a surface coating and will not alter the natural look. All surfaces treated are harder and less slippery. WATER, STAIN & SLIP PROTECTION FOR: Quartz, Glazed Tile, Polished Marble, Grout, Porcelain Tile, Stucco, Quarry Tile, Polished Granite, Slate, Ceramic Tile, Terrazzo, Travertine. SPECIAL FEATURES: Interior & Exterior Use. Safe for Food Areas. Easy-to-Use. Will Not Yellow. Grout Release. Weather Resistant. Superior Coverage. U.V. Transparent. Oil & Water Resistant.