RUST-OLEUM 301239 Moisture Stop Fortifying Sealer Clear/Low Luster 1 gal - Pack of 4

RUST-OLEUM Moisture stop penetrates into concrete and reacts with the free calcium and water to form a gel in cracks, pores and capillaries to protect against the ingress of water and contaminants. This allows surfaces that were previously uncoatable, due to moisture, to be coated.