Black Diamond Stoneworks Natural Stone and Grout SHOWER SEALER is an innovative, professional-quality penetrating sealer that will protect your natural stone shower and grout from the damage of water, soap scum, and calcium. Keeping the surfaces looking beautiful and easy to clean. Use on marble, granite, travertine, limestone, and grout. Our SHOWER SEALER can perform up to ten years on some applications, but we recommend re-applying between 5-7 years to ensure the best results. DIRECTIONS: Before applying, the surface must be clean and dry. To remove soap scum, use our Natural Stone Soap Scum Remover. When sealing natural stone showers, start on the walls from the top down. Spray the SHOWER SEALER on one wall until completely wet. To help the sealer penetrate and to keep it from running off onto the floor it is recommended that you use a paint roller, paint pad, or the scrubbing side of a sponge to work the sealer over the surface for 5 minutes. If the surface begins to dry before 5 minutes is up spray more sealer on it and continue to work, it into the surface for the remainder of the 5 minutes. COMPLETELY dry the surface after 5 minutes. If you do not completely dry the surface it could become tacky and slippery when wet. Move on to the next section and repeat. To achieve the best performance, a second coat should be applied after 20 minutes. Wait for 24 to 48 hours before getting the surface wet. When sealing grout in tile, follow the directions above but you only need to spray it and work it into the grout lines. Do not worry about the tile as it will wipe up when you are done, just do not let it dry on the tile. COVERAGE: one quart will seal two large showers.