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Unread 01-25-2003, 06:57 AM   #1
mullet
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efflouresence

Good to be back. Not sure the title spelling is right though.
I have a small outdoor entry that has developed a grout color imperfection. The entry has a canopy. The grout and tile was installed the same day (speed set), but on a very gloomy day. It had rained in the morning and the job was done in the afternoon, with an overcast. The grout lines near the outside edge faded to a bleachy bone compared to a tan.
1) What could of caused this?
2) Is there a fix without staining?
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Unread 01-25-2003, 07:14 AM   #2
tileguytodd
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You could try a sulfamic acid with a scrubber.Rinse well. This works on rare occassions.You may have success though.
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Unread 01-25-2003, 01:47 PM   #3
John Bridge
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First of all, saturate the grout with water. Add one part acid to eight parts acid.
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Unread 01-25-2003, 02:01 PM   #4
tileguytodd
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I think he meant 1 part acid to 8 parts water.

Wear eye protection!!!!
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Unread 01-25-2003, 02:58 PM   #5
John Bridge
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Yeah, wear rubber gloves, too, especially if you use my formula.

Yes, eight parts water to begin with.
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