TTK Resurfacing - The Premier Charlotte Concrete Resurfacing Company

Stained Concrete

Whether you are interested in acid/ chemical stains, dyes, or other semi-transparent stains, we can help choose what is right for you. Chemical stains--water-based acidic solutions containing metallic salts that react with the concrete's lime content. Once the chemical reaction takes place, the stain forms a permanent bond with the concrete and won't chip off or peel away. Although they are often called acid stains, acid isn't the ingredient that colors the concrete. Metallic salts in an acidic, water-based solution react with hydrated lime (calcium hydroxide) in hardened concrete to yield insoluble, colored compounds that become a permanent part of the concrete. The acid in chemical stains opens the top surface of the concrete, allowing metallic salts to reach the free lime deposits. Water from the stain solution then fuels the reaction, usually for about a month after the stain has been applied. Other factors that affect the outcome include: Cement properties and amount Admixtures used Type of aggregate used Concrete finishing methods Concrete age and moisture content when stain is applied Weather conditions when stain is applied Efflorescence Dyes are the latest buzz in the decorative concrete community. Their ease of use, extensive palette, and vibrancy of color (which can be more intense than chemical stains) are creating a wave of popularity that is gaining momentum. Dyes are available in water- or solvent-based formulations and produce looks ranging from monotone to translucent, depending on how they are applied. Water-based dyes typically produce more marbling and variegation (similar to the look of a chemical stain), while solvent-based dyes tend to be more monotone and uniform in color. Some manufacturers' water- and solvent-based dyes can be combined to produce special color effects. The downside to dyes is that they penetrate very fast, leaving little room for error during application. Also, they are not UV stable, so most manufacturers recommend indoor use only.