How to Prepare Concrete Before Staining It

One of the most popular commercial flooring options today is stained concrete. Because of the relative ease and affordability, some business owners have even considered staining their concrete floors on their own. You must, for best results, make sure that your concrete floor is as clean as humanly possible before attempting to stain it.

Steps

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    Buy some trisodium phosphate (TSP). This chemical is particularly useful for cleaning concrete.
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    Sweep your concrete floor with a shop broom, gathering up as much dirt and debris as possible.
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    Scrub your floor with the TSP. Use a rotary scrubbing machine with a special pad designed for the aggressive scrubbing of concrete.
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    Look for remaining stains, such as those left behind by glues or caulking compounds.
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    Attempt to scrape any of the glue or caulk off of the floor with a putty knife or floor scraper.
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    If scraping alone does not work, apply either a nonflammable chemical stripper or a powdered hydrated lime paste to the stained area. If using paste, allow it to dry and try to scrape the glue from the concrete again.
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    Scrub the floor with TSP a second time.
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    Rinse the floor with clean water to remove any remaining cleaning compounds.
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    Use a shop vac to dry your concrete, if necessary.

Tips

  • Do not apply your concrete staining without cleaning the floor first. It may not stick properly, or the stained or polished concrete may look flawed when cured.

Warnings

  • Wear protective gear, including gloves, goggles, or a face mask, when dealing with chemical strippers.


Sources and Citations

Article Info

Categories: Concrete