Acid Staining Concrete – Tips for Success

Concrete acid stain is true to new or old, plain or colored concrete surfaces. These come in 10 basic colors. But they are often called acid stains, acid is not ingredient that colors the concrete. Metallic salts in the acidic, water based solution react with the concrete to permanently shade of the surface. Siliceous aggregates such as gravel or sand, don’t react with the stain. Surfaces containing an increased content of cement will react many with less cement yielding more intense colors. _stained_concrete_

Since each surface differs, results may vary from surface to another. We always recommend testing a smaller area to determine how the final result will appear. Remember that the final color won’t be apparent until the sealer has been applied. With wood stain you can still see the grain in the wood through the stain, acid stain is extremely similar to wood stain as you have seen all defects or finishing marks through it.

Factors that will affect the final results include:

Cement properties and amount used, Admixtures and design of aggregate used.
Concrete finishing methods, concrete age, and moisture content
Porosity and Texture from the surface
Weather conditions once the stain is applied
Efflorescence _stained_concrete_

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