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.