Mason's Select clear concrete and masonry sealers are non-yellowing, and won't crack or peel. The acrylic sealers seal out moisture, inhibit mildew, and provide resistance to hot tire pick-up, UV rays, gasoline, oils, and other chemicals. They may be used alone or as a topcoat over Mason's Select Transparent Concrete Stain. Available in satin and gloss finishes, they're ideal for both interior and exterior applications. Duckback Products, 800-825-5382, .