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Unread 04-21-2008, 09:55 AM   #1
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Grout Haze/Discolored Tiles


I just laid some 2 inch hex, with 1 inch square white tile (1 ft sheets - hex and squares integrated together on each sheet) in my bathroom I'm renovating. I used charcoal (nearly black) grout which required several attempts at wiping down to remove as much of the haze as possible. The result is generally good except that most of the 1 inch square tiles seem to have a gray haze still on them, and I'm concerned that the grout has stained the 1 inch tile for good. The 2 " hex tiles do not have haze, so I'm a little perplexed. I'm assuming that it is just grout haze, and that some remover product will do the trick, but not sure I want to go out and spend $$ for something that won't work or will somehow do damage to the grout job.

Any suggestions would be greatly appreciated.

Thanks, Paul
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Unread 04-21-2008, 03:34 PM   #2
Florida Tile & Stone Man
Join Date: Apr 2004
Location: Naples Fl.
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Hard to say Paul, but maybe the 1" pieces are actually a tumbled marble,they would have absorbed the pigment of the black grout and will be very difficult to get it out.If it's unglazed ceramic, it may be almost impossible also,a pic would help, but any way, i think a little sulfamic acid cleaning and using an acid brush might help, i can't think of any other way to even come close to cleaning them.If it is tumbled marble it may slightly etch them but so be it,you can always rinse them and use a little dab of enhancing sealer to bring them back to life.

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Unread 04-21-2008, 05:01 PM   #3
Chris the Rep
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I've seen both of these products in action, and they will do wonders for black grout on the face of unglazed mosaics. Neither will damage the grout that is already in place.

You'll have to find a distributor for the Bostik HydroClean product, the Legge product can be ordered on line.



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Unread 04-26-2008, 12:57 AM   #4
Tiling Logistics
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We also do Grafitti Removal, ReSealing, Grout ReColoring and Cosmetic Repairs.

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