STAIN-PROOF® Premium Waterborne Impregnating Sealer, formerly known as STAIN-PROOF WATERBORNE™, is a premium water-based sealing technology designed to seal a range of stone and masonry surfaces, including granite, travertine, limestone and marble. Premium Waterborne Impregnating Sealer protects against staining from oils and other contaminants and provides long-lasting water repellency. Treated surfaces retain breathability, existing color and finish - surfaces are also easier to clean. For indoor, outdoor, residential and commercial use.