StoneTech Heavy Duty Exterior Sealer for Stone & Masonry, 1-Quart (.946L) Solvent based, natural look sealer which offers heavy duty protection, water repellency and weather resistance to natural stone and masonry surfaces Heavy-duty exterior stone and masonry sealer for superior water repellency and stain protection Low-emittance of odor makes this product suitable for many types of interior and exterior surfaces 1 Quart provides coverage for up to 250 sq. ft. Contains FDA compliant solvent, and chlorine resistant