Classic Simple Stain Concentrate is an easy to use water-based stain that enhances the aesthetic of many different types of surfaces. Multiple colors can be used to create unique and beautiful results. This advanced formula allows color to reach its full potential almost immediately upon application. Color may be built up without the worry of damaging the concrete like acid stain does. Classic Simple Stain Concentrate is UV stable and has zero VOC. After applying the first coat, you only have to wait 20-30 minutes to apply the second coat at 77ºF. All colors may be used on interior and exterior surfaces in a wide range of environments. Apply a Classic Coatings Systems water-based sealer over the stain to protect the color and make it more vibrant. It is highly recommended to test a sample area first. We recommend mixing 1 quart of Classic Simple Stain Concentrate with 4 quarts of distilled or deionized water. For more opacity but less coverage, mix 1 quart of stain with 3 quarts of water. For lighter results and more coverage, mix 1 quart of stain with 5 quarts of water. The dilution ratio should not surpass 5 quarts since vehicle solids (adhesion) decrease, resulting in a less durable stain. One coat yields approximately 600-700 sq. ft. and the recommended two coats yield approximately 400-500 sq. ft. depending on application method and surface conditions. New 4" concrete must cure for 28 days before the stain can be applied. Color: Antique Rust.