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how do I clean Thompsons semi transparent stain off a honed limestone BBQ top that a stupid neighbor over sprayed when staining his side of our fence ??

how do I clean Thompsons semi transparent stain off a honed limestone BBQ top that a stupid neighbor over sprayed when staining his side of our fence ??
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Posted 2016-01-13T06:23:00+0000  by Dsteig Dsteig
 
Sorry to learn of your over-spray problem Dsteig,

HOW TO ... four ideas:

1) Masons would use diluted (25-percent) Muriatic Acid and a stiff bristle brush to clean stone.

Full-strength Muriatic Acid is available in Outdoor Gardening at many stores.

Depending upon how soft your limestone is, full-strength might be too aggressive.;

2) Behr  All-in-One is diluted Oxalic Acid and is commonly used to remove stain from decks.

This is a mid-level approach that may not damage your stone, but may take several coats to fully remove the stain;

3) Stone and tile installers would consider Miracle Fast-Acting Phosphoric Acid Cleaner.

This solution uses a less-aggressive acid to remove residue from the surface of stone; and

4) Graffiti and other coatings applied to stone or brick may also be removed with a grinder.

This approach will certainly remove the stain, but may create irregular appearance to the surface.

SAFETY FIRST:
If you're experienced using strong acids or aggressive power tools, choose either 1 or 4.

If you prefer to work with less-aggressive product and are willing to take time to produce better results, choose either 2 or 3.

Regardless of which approach you take, be certain to wear eye protection, appropriate gloves and long pants and shirts with not open-toe shoes.

Since this is a regular problem for DIYers, please take time to come back and share your results with The Community.

FINALLY:
Be prepared to thoroughly rinse each of these acid solutions immediately.

When you re-wet stain on top of stone or mortar, it will have a tendency to spread out and embed again if you allow the re-wet material to sit on the surface too long.

Most solutions used for this purpose say, "Rinse in ten-minutes. Do not allow to dry."
Posted 2016-01-14T15:57:23+0000  by Pat_HD_ATL
 
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