| What is the difference between acid stain and polymer (or acrylic) stain? acid stain - (or chemical stain) A stain containing inorganic salts dissolved in an acidic, water-based solution that reacts chemically with the minerals in hardened concrete to produce permanent, transparent color that will not peel or flake. Gives concrete an attractive variegated or marbleized appearance. Colors tend to be earth tones, such as tans, browns, reddish browns, and greens. polymer stain- An acrylic-urethane based stain available in a broader palette of colors than acid stains. Very low in volatile organic compounds, with workability characteristics similar to latex paint but has adhesion characteristics of acid stain. Can be applied to concrete surfaces by brush, roller, sponge, cloth, or commercial sprayer. |