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January 18 2016


Acid Staining Concrete - Tricks for Success

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

Since each surface is unique, results may vary from surface to another. We always recommend testing a small area to determine how the last result will appear. Observe that the final color will never be apparent until the sealer has been applied. With wood stain you could still see the grain from 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 may affect the final results include:

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

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