Thompson's Waterseal Clear VOC Multisurface Waterproofing Sealer, 1.2 Gallon is an excellent clear waterproofing sealer designed for use on multiple surfaces. When applied directly from the can, it effectively eliminates chipping and spalling. This sealer contains no silicones and is made up of several organic and inorganic solids carried beneath the surface by an aromatic solvent. These solids expand to cork up the pores of the treated material, providing strong protection against water damage. I for decks, fences, brick, patios, concrete driveways, and other exterior surfaces, the coverage depends on the porosity of the material being treated. Model Number: