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Old 01-28-2010, 09:28 PM   #1
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What caused my grout to do this?


Is the discoloration from not mixing well enough? I mixed the grout till I thought my hand was gonna fall off, then I let it slake for over ten minutes. Thoughts?

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Old 01-28-2010, 11:44 PM   #2
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What caused my grout to do this?


Efflorescence. Caused by to much moisture, either when the grout was mixed, when the tiles where cleaned or the thinset wasn't dry when the grout was applied. Sometimes it can be removed by vinegar. Don't overwet the grout when cleaning this off, to much moisture was the cause in the first place. Other acid washes are available.

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Old 01-29-2010, 10:36 AM   #3
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What caused my grout to do this?


Quote:
Originally Posted by Mop in Hand View Post
Efflorescence. Caused by to much moisture, either when the grout was mixed, when the tiles where cleaned or the thinset wasn't dry when the grout was applied. Sometimes it can be removed by vinegar. Don't overwet the grout when cleaning this off, to much moisture was the cause in the first place. Other acid washes are available.
Thanks!! I guess it's vinegar or a do-over
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Old 01-29-2010, 07:02 PM   #4
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What caused my grout to do this?


scrub brush and vinegar should fix it. some times it will just scrub off dry. i would not use any acid. acid wont fix grout. good luck.
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Old 01-29-2010, 07:47 PM   #5
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What caused my grout to do this?


If that doesn't work try this http://www.custombuildingproducts.co...er=arc&lang=en
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