Minimize efflorescence in high-moisture areas, such as pool surrounds and drain spouts, with SB-4000 Water Repelling Sealer. It is designed to repel water absorption, penetrating deep into the surface of concrete, brick, or natural stone to build a barrier between the surface and water. The barrier causes the excess moisture to sit on the surface, so it can drain off or evaporate. Surebond Inc. 888-447-8731.