The most masonry-compatible water repellent available. Engineered to not breakdown in UV light, and so will last much longer that silane/siloxane masonry water repellents.
R-97 can be applied to any masonry/stone surface, including: brick, grout, mortar, concrete, unpolished marble, limestone, brownstone, sandstone, tile.
This water repellent works by penetrating the substrate. It is not topical. After being absorbed, R-97 establishes a powerful chemical network within the substrate pores -- keeping moisture and oil out. In addition to keeping treated surfaces dry and making them easy to clean, R-97 does not block the pores, permitting essential vapor transmission and compatibility.
This water-based composition is odorless and leaves a natural finish (no sheen). The cured surface can be cleaned and can act as a protective layer against debris, pollutants, and graffiti.