MasonrySaver all-purpose heavy-duty water repellent is the "work-horse" product of the MasonrySaver line. This high-performance, VOC compliant product is perfect for sealing and protecting brick walls, driveways, sidewalks, and patios. It is a modified siloxane-based product designed to penetrate deeply into most masonry and concrete pores. Unlike acrylics, silicone and other waterproofing sealers that remain on the surface and trap water vapors, this masonry waterproofing product allows deep penetration of its active ingredient of up to 1/4 inch or more. Available in 1 and 5 gallon containers.