Thanks John. By the color it
looks to be silica so it may ne be effected by the usual type acids, worth a
try, can’t use any of the silica cutting acids because of the tile. No
ProSoCo here in Australia. I will have to try a tailgate blend, was
thinking sulfuric, hydrochloric, with a neutral surfactant.
From: John Freitag
[mailto:jfreitag@thestoneandtileschool.com]
Sent: Tuesday, August 24, 2010 11:49 PM
To: Restoration and Maintenance
Subject: RE: [sccpartners]
Mike,
This is pretty heavy deposits. I
would use Prosco Masonry Cleaner, this is an acid base material that will
remove this. Even with the use of the Masonry Cleaner you may need to do some
scraping
John E. Freitag
President/Director
The Stone and Tile School
Office 407-567-7652
Cell 407-615-0134
jfreitag@thestoneandtileschool.com
From: Mike Marsoun
[mailto:nulifesc@bigpond.com]
Sent: Monday, August 23, 2010 11:51 PM
To: Restoration and Maintenance
Subject: [sccpartners]
Hi Guys, any ideas for a mechanical way to get rid of
this? It looks like silica… There are also a lot of areas
where it is in the grout and weeping down stair risers. Last resort will be
hand scraping.
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