StoneTech Heavy Duty Grout Sealer, 1-Quart (.946L) Provides heavy duty, natural look protection for grout on ceramic and porcelain tile. Advanced, water-based fluorochemicals to protect against tough oil & water-based stains. Grout will be easier to clean and stay clean longer. Water-based low-solids coating Interior & Exterior Quart: 150-250 sq. ft.