Cabot Waterproof Coating. 5 Gallons. Designed to provide protection on a multitude of surfaces by coating the pores of the substrates with silicone. For use on wood, brick, concrete and masonry. Ideal for new or properly reconditioned decks, fences, siding, shingles, shakes and logs. Silicone fortified to last 5x longer than ordinary wax-based formulas. Penetrates to fill surface pores and lock out water. Easy-to-use and long-lasting. Coverage rates will vary depending on porosity of the surface.