VX Guardian C Crystalization is a protective cement coating for concrete surfaces to make them waterproof. This material reacts with water vapor to form crystallization on the capillary layer of water and gaps, which will prevent further water penetration into the concrete. VX Guardian C Crystalization is applied by brushing, rolling, or spraying onto exposed areas and does not require special protection or shielding. It is recommended for use in areas such as swimming pools, tunnels, parking lots, below-grade foundations, roofs, basements, water tanks, concrete pipes, marine structures, bridges, concrete floors, and walls