Natural Appearance Sealers for Concrete, Stone & Grout. Keep a clean, natural appearance and improve the durability of your concrete driveway, patio pavers, unglazed cement tiles, concrete block retaining wall, cast concrete or your garage floor with AQUA-X 11. Or create a powerful moisture barrier for the grout in your shower, tile floor, or backsplash with AQUA-X Grout Sealer.