RadonSeal LastiSeal® Penetrating Concrete & Brick Sealer - 1 gal.

LastiSeal is a unique, state-of-the-art, waterproofing sealer for bricks, concrete, mortar, cultured stone, and other porous substrates. This water-based polyester-polymer and polyurethane sealer penetrates up to 4 in. below the surface. LastiSeal fills the pores internally, bonding the substrate and curing as a hard plastic inside. Sealed surfaces will shed water for years to come. Unlike paints or surface sealers, LastiSeal will not change the appearance of your brick, concrete, or masonry.