Serveon RS100 1 qt Rocksteel Silicone Sealer prevents saltwater erosion. It weatherproofs, protects, and preserves stone, masonry patios, pool coping/decks, walls, walkways, waterfalls, and other landscaping structures. RS100 is a durable, exceptionally long lasting: deep penetration formulation; cures with a natural, matte finish preserving the natural look of the stone; provides exceptional coverage, has strong resistance to UV rays; fast drying and powerful bonding are more of exceptional properties of this sealant.