CEMTEC SILICONE WATERPELLER is a liquid compound which penetrates the pores of treated materials and provides durable and highly effective water repellent protection. CEMTEC SILICONE WATERPELLER generally dries tack-free in two to four hours, (21°C). It protects masonry surfaces from moisture absorption, dirt and dust. CEMTEC SILICONE WATERPELLER is available in two standard formulations: Formula “S” - ilicone solids in a solvent system and Formula “W” - Siliconate solids in a water based V.O.C. compliant system.