Thompson's Waterseal Clear VOC Multisurface Waterproofing Sealer, Quart is an excellent clear waterproofing sealer designed for use directly from the can on multiple surfaces. This sealer effectively eliminates chipping and spalling by penetrating beneath the surface with a unique blend of organic and inorganic solids carried by an aromatic solvent. These solids expand to cork up pores in the treated material, providing superior protection against water damage. I for decks, fences, brick, patios, concrete driveways, and other exterior surfaces, it helps preserve and extend the life of your outdoor spaces. Coverage varies depending on the porosity of the surface. Model Number: