Dear Denise:
Now, why on earth did you start doing things on your own (the use of that cleaning agent) without having a clue of what you were up against?
I don't know why you have those rust-looking stains, but I may have to consider the possibility that your stone restoration contracting company used what I consider a phony method of restoration called “crystallization”, which involves the use of a strong acid together with steel-wool; which may explain the rusty stains.
Other than that I wouldn't know what else to think.
I would really appreciate it if you will keep my posted.
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
Article ID: 987
Created On: Fri, Jan 4, 2008 at 5:04 PM
Last Updated On: Fri, Jan 4, 2008 at 12:00 AM
Authored by: Maurizio Bertoli [mail@mbstone.com]
Online URL: https://marblecleaning.org/knowledgebase/article.php?id=987