Water Repellants (Clear Sealer)
Many products claim to repel water on concrete; however, effective water repellants have a solid hydrophobic material suspended in a solvent or other carrier, which carries it into the concrete or masonry then evaporates. These products contain siloxane or silane.
Cleaning of the surface prior to application of water repellant is always highly recommended prior to application. Performing a small test area is highly recommended to ensure the sealer does not change the appearance to the existing substrate.