I have cleaned my clients sandstone patio using an aciid based solution and this has left a white mmist over the affected area. It is an outdoor patio and would like any information you have on rectifyiing this problem. Thank you Jamie

 

Dear Jamie:

Acid and stone are two words that should never be read in the same sentence.

Too late now… L

 

The result consequent of a chemical reaction can't be reversed. At least this one can't. Only some seriously deep and aggressive honing (probably grinding) of the stone to reach a layer that was not affected by the acid will do the trick.

Now, do you have the right equipment, abrasives and, above all, the training to tackle a job like that?

If not, you'd better got hold of reputable stone restoration company to do the job for you.

May I ask you now to please read and e-sign our Statement of Purpose at: http://www.marblecleaning.org/purpose.htm?

Ciao and good luck,

Mauri zio Bertoli

 

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