Moisture Stop, Gallon, Concrete Sealer, Penetrates Deep Into The Concrete, Unlike Paints & Surface Sealers, Deep Penetration Fills The Pores Of The Concrete & Chemically Reacts With The Minerals Forming A Silicate Mineral, Stop Prevents Salt Damage, Radon Gas & Moisture, Retains The Look Of Natural Concrete, Seals From Inside Out, Retains Original Look Of Concrete, Interior/Exterior Use, Zero VOC, Covers 200 SQFT.