Wet-Look Paver Sealer - Silacast B.E.SSILACAST B. E. S is a wet look non toxic polymer emulsion that is intended to improve and provide porous concrete surfaces like pavers, barrel tiles, roof tiles, and natural stones. SILACAST B. E. S penetrates deeply into the substrate, unlike topical acrylic sealers, accentuating the material's inherent hues. Topical sealants create a layer that reflects light from the surface and only seems to improve. Topical acrylic sealants can become yellow and