TRANSPARENT WATER REPELLENT WB: is a water-based water-repellent sealer specifically designed for concrete, brick, natural stone and masonry. Aquatic Shield works better and lasts much longer than conventional sealers because it chemically reacts with the substrate to form an insoluble, water-repellent barrier. This barrier is within the surface so it cannot wear away, fade, yellow, crack or peel. The finished application enhances the surface’s natural color still allowing breath-ability.