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Unread 09-26-2017, 08:35 AM   #1
mlorek
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Grout mistake

Guys I just got done grouting a small basement pantry. As always when I begin a project I was pulled away to help my wife and kids in the middle of the project. I wasn't able to clean the grout up until it had somewhat hardened on some of the tile surfaces. I used a acid wash Recomended by the orange big box to remove this small amount of haze and grout. I came down today to see the grout color had completely changed from dark brown to an almost Christmas red. It's only in about seven square feet of area but it looks ridiculous. What can I do here?? Will I need to rake it out and re grout? Thanks for any help

Mike
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Unread 09-26-2017, 09:12 AM   #2
HS345
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What brand/type of grout?

You probably have two choices, dig it out and grout it again, or, use some grout colorant on it.
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Unread 09-26-2017, 09:35 AM   #3
mlorek
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Thanks Greg, I think I'll dig it out
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Unread 09-26-2017, 09:42 AM   #4
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My pleasure.

The reason I asked what brand/type of grout is, some brands/types are prone to drying mottled like that. I generally stay away from Polyblend by Custom building products, and Mapei's regular cementitious grout. Both companies do make better grout lines.

Custom Building Products Prisim

Mapei Ultracolor Plus, and, Ultracolor Plus FA

Another good one is.

Laticrete Permacolor Select
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Unread 09-26-2017, 07:07 PM   #5
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Greg, you're making me nervous. I have a bunch of keracolor S for when I get to grouting. Do I just need to make sure I mix it well, or should I think about returning it?

Thanks,
Bruce
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Unread 09-26-2017, 07:14 PM   #6
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Sorry Bruce. What color?
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Unread 09-26-2017, 07:26 PM   #7
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I have the Mapei 105 Driftwood KereColor S
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Unread 09-26-2017, 07:53 PM   #8
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It's kind of a darker color. I personally wouldn't chance it.
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Unread 09-27-2017, 02:58 AM   #9
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I have only had the mottled color issue on 1 Mapei job in 15 years as an installer. And that issue was all about the water they uses to mix the grout. My suggestion is to mix with distilled water and follow the mixing instructions. The color should come out fine. Driftwood is a good color that I personally have never had a problem with.

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Unread 09-27-2017, 09:07 AM   #10
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Guys this is the grout I used, I tried to scratch some of it up last night and it seems to be workinG ok but the carbide took I was using was leaving a silver residue on the tile edges. This is becoming a nightmare.
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Unread 10-02-2017, 04:54 PM   #11
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Guys is this normal, grout has dried to an almost white, when I wet it the whole thing goes back to the color it should be?
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Unread 10-02-2017, 04:56 PM   #12
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Three more
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Unread 10-02-2017, 06:48 PM   #13
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Did you have alot of thinset left in the joints that you may not have cleaned out prior to grouting
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Unread 10-02-2017, 07:39 PM   #14
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The joints wer clean , the ones with thinset were raked out to make sure they were clean. It seems to be just on the surface, I wet it and it's fine, a friend here suggests a wet look sealer? What do you think?
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Unread 10-02-2017, 09:38 PM   #15
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The polyurathane grout that you used is very sensitive to water during installation and for about 3 days after. Says right on the bucket not to get it wet for 3 days. Every time you wipe it, you are dissolving some of the binding agents, which then re-deposit on the surface, leaving a white film. You need to install this grout with the minimum amount of water necessary for clean up, then buff with a nearly dry microfibre cloth. Then do not wet it again for at least 3 days, preferably a week.

Don't get frustrated, it's a very difficult product to work with, IMO best left to pros.
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