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Unread 03-10-2005, 11:19 AM   #31
DeniseW
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Arrow

well, this area is 175sq ft, 1/3 of which is having the grout issue. The other 2/3 is fine..as we made sure we used a very very tiny amount of water(to which I still think is crazy, the sponge was more dry than it was wet). I am trying the sulfamic acid that was recommended on another site as well as the HD people. I asked the person at Lowe's and he had NO idea what I was talking about. He had never heard of the problem or the acid I was looking for OR the color sealant I am praying this acid works(sulfamic is the name). I also read on another site that vinegar is a big no no in their eyes. I guess everyone has their own methods...I just hope ONE works for me!
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Unread 03-10-2005, 12:09 PM   #32
cdahl
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Denise, A sulfamic acid cleaner should remove the white film on your grout(which sounds like efflorescence). If you are having a hard time, call MAPEI at 1-800-42-MAPEI and ask for me.

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Unread 03-10-2005, 02:13 PM   #33
DeniseW
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so you work for Mapei cdahl? I have one question. The acid says to wait 10 days to use, can you tell me why this is beneficial? I would think the sooner I can get that layer off the better.
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Unread 03-10-2005, 03:39 PM   #34
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Yes I do.

If you would put too much on the grout, and it penetrated, you could interfere with the proper curing of the grout. But if you are careful you could do it now. Use the cleaner sparingly, and be sure rinse well with water when you're done.

It would not hurt to wait though. Your white haze on the grout is likely just a collection of salts from the grout curing. Efflorescence is the devil!

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Unread 03-11-2005, 08:05 PM   #35
DeniseW
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ok so, I tried using this glyclic acid (or something spelled close to that...it was found next to the sulfamic acid so I bought both..the HD people said it was nearly the same thing?) and it is working some but not totally. I am finding when I use it...I get a film of slimey stuff that remains after I scrub but I am able to wipe it up w/ towel and rinse. Is this the stuff that is coming from the efflouresence? Also, in some places it looks heavier..is this b/c the acid is bringing it up but I am not rinsing it well enough? Some places looks better...some not at all. I was told this works just as well as sulfamic acid...maybe it doesnt?
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Unread 01-08-2008, 11:40 AM   #36
zachs dad
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I believe I'm in the same situation, in that my beige sanded grout turned white after drying. I'm fairly certain I used too much water in the wipe down. However, now that I see the white grout, it doesn't bother me. Is the appearance the only issue? Am I asking for trouble if I go ahead and seal the grout without trying to restore its true color?
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Unread 01-08-2008, 10:42 PM   #37
doitright
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Hi Zachs Dad

In situations like this, we normally like you to start a fresh thread.

I answer to your question, I would first try scratching the grout with your fingernail. If it is soft, I would replace it. If the grout passes that TEST, I would dampen the grout with water and see how it darkens. If it looks consistent you could go ahead and seal after it drys.

From what you are describing, I'd be concerned that too much latex is on the surface.
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Unread 01-09-2008, 06:53 AM   #38
zachs dad
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Thanks much, John. I apologize for the newbie mistake.

The grout seems solid and the color looks consistent (full intensity of original grout color) when wet.

I assume when the sealer goes on, it will make the grout color reappear, but then go back to white once it dries? I guess my next step is to test it in an inconspicuous area.

Great forum, by the way. Glad I found it.
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Unread 01-09-2008, 07:34 AM   #39
doitright
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Hi Zachs Dad

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Unread 09-22-2009, 12:11 PM   #40
jessfretty
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chamois looks more like malt

My husband and I completed a couple of tiling projects in our home using "chamois" colored powder grout. The first time, it came out hazy, which we figure is due to over washing. The second project using the same color grout came out uniformally darker than the first project except the color didn't match "chamois" it looked more like "malt", which now clashes with our color scheme. We decided to go with plan B and order a colorant from aquamix.com and stain the grout. But to make sure I knew what color it was supposed to be, I went to Lowe's where I originially purchased the tile and grout and looked at their grouted sample display of the tile we purchased. Their display using "chamois" grout also looks more like "Malt". The person working in that department thought so too. And it clashed with the color scheme that it was meant for as well. So, if I order "chamois" colorant, how do I know that I'm getting the color on the official Mapei Color Palette? Right now, even the word "grout" makes me mad. I need a solution to this problem. Any suggestions?
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Unread 09-22-2009, 06:29 PM   #41
Brian in San Diego
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Jessica,

It's a good idea to make a test board of any grout prior to putting in on a floor if the shade variation is enough to "clash with the color scheme" you have planned. At around 10 bucks a box it's a rather inexpensive investment for something you are going to have to live with for a long period of time.

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