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Old 03-29-2005, 07:04 AM   #1
cabom
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Why oh why is my grouting shrinking??

I am pretty pleased with the job I did on the bathroom vanity top. But--what am I doing wrong to cause some separation of the grout from the tile edges. Only in a few places has this happened but I still have more tiling to do and would like to not see this again. I used non-sanded grout because of 1/16 grout on the larger field tiles. The only place I have noticed the sep. is on the mosaic area that has 1/8" grout. The mosaic runs between the larger tiles.
Carol
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Old 03-29-2005, 07:16 AM   #2
Arn
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My guess is that the grout didnt shrink, but was washed out too much during clean wiping. I am leary of unsanded anywhere except tight joint stuff like granite or DAL 4X4. I would have used sanded on those 1/16" too.

P A H : you could mix more NS grout, moisten the sunken grout and try to add more. It may bite in it may not. you could trim out the sunken areas with a utility knife and re-grout them deeper.

mix non sanded by hand. It should be the consistancy of room temp. adams creamy peanut butter.

best of luck!
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Old 03-29-2005, 09:16 AM   #3
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Also you said you have more tiling to do. If you have a 1/16 to 1/8 in joint sometimes you can mix the sanded and non-sanded grouts to make sure there is no shrinkage effect. This may change the color slightly but its works great.
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Old 03-29-2005, 09:59 AM   #4
Scooter
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Usually too much water is the cause of shrinking.

Either in mixing or in cleaning up.
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Old 03-29-2005, 10:08 AM   #5
cabom
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Many Thanks

Thanks to everyone for your suggestions. I'll bet all were correct on my amateur techniques.
Carol
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Old 03-29-2005, 09:06 PM   #6
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carol
when you grout again, use a mix of wall and floor grout and it want happen again
good luck
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