Grout Release is a unique product formulated for sealing surfaces prior to grouting. Using Grout Release prior to the grouting process will make cleanup of grout haze easier after application and will protect your surface from grout haze or stains. Provides Resistance Against: Cement, epoxy, urethane and new age grouts from sticking to the surface and potentially staining the surface. Grout release can be used with: Quarry Tile. Ceramic Tile, Porcelain Tile, Glazed Tile, Marble, Granite, Travertine, Slate, Quartz, Brick, Terrazzo. SPECIAL FEATURES: Interior & Exterior Use. Stain Resistant. Easy to Use. Weather Resistant.