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Grout removal help

Old 10-02-2007, 09:15 AM
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Default Grout removal help

Help!!!!!!! I grouted 1x1 slate tiles (on 12x12 sheets). Because the tile is natural stone and uneven I am having a hard time removing the grout from the tile. I sealed it before grouting and I have since tried a grout haze remover but it is just not coming clean. Any advice from the tile experts out there? Picture looks cleaner becasue it was taken after I washed with water, but as soon as it dries it's heavy with grout.

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Old 10-02-2007, 09:45 AM
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Default Re: Grout removal help

Try vinegar
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Old 10-02-2007, 10:29 AM
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Default Re: Grout removal help

Jamo makes a grout cleaner that is a powder base that is mixed with water. If you cant find that, some toilet bowl cleaners have a sulfuric base to them. Be careful, and make sure it is well ventilated with either!
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Old 10-02-2007, 03:57 PM
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Default RE: Grout removal help

Good luck. Once grout dries its just about impossible to remove without damaging the tile. Natural stone is even worse. Even when sealed,its porous enough that it really holds the grout. Chemicals strong enough to remove the grout will more than likely etch the stone.
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Old 10-02-2007, 05:44 PM
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Default Re: Grout removal help

I used citrus based cleaner that the tile folks at Lowes recommended. It took a few applications but it came off.
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Old 10-02-2007, 06:37 PM
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Default Re: Grout removal help

they make a cleaner
looks like you never cleaned the tile enough
look for a stone cleaner, it will come off but will take some elbow grease
keep changing your buckets of water, and use all 6 sides of a good sponge
one swipe, then switch, and repeat
the key is not to keep putting dirty water on the stone
i have laid tile,stone,brick for 10 years until i became a marine tech
tough work but your like an artist
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Old 10-02-2007, 07:57 PM
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Default Re: Grout removal help

A mild solution of sulfuric acid did the trick. Another good application & scrub tomorrow night and it will look like a pro did it! Thanks for all the advce.
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Old 10-03-2007, 02:19 PM
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Default Re: Grout removal help

NJFISH - 10/2/2007 8:57 PM A mild solution of sulfuric acid did the trick. Another good application & scrub tomorrow night and it will look like a pro did it! Thanks for all the advce.
Just keep one thing in mind, the sulfuric acid soluition stripped the sealer from the stone. NEVER use SA on stone. Vinegar is the best tile cleaner around. And it's cheap!

On another note, Did you use a level?
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Old 10-03-2007, 03:38 PM
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Default Re: Grout removal help

Just1more - 10/3/2007 2:19 PM



NJFISH - 10/2/2007 8:57 PM A mild solution of sulfuric acid did the trick. Another good application & scrub tomorrow night and it will look like a pro did it! Thanks for all the advce.
Just keep one thing in mind, the sulfuric acid soluition stripped the sealer from the stone. NEVER use SA on stone. Vinegar is the best tile cleaner around. And it's cheap!

On another note, Did you use a level?
A level on what? When I installed the tile I used a laser line, is that what you mean? The problem getting the grout off was because of the uneveness (is that a word?) of the stone, the float would not pick-up the grout...and that I have never tiled before

I tried white vinegar and it did not remove the grout. The label on the SA did say it was OK for natural stone though. So I should re-seal it?
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Old 10-03-2007, 04:18 PM
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Default Re: Grout removal help

well the grout is not sealed, but you are not supposed to seal until 28 days after, but i think in a shower it will never dry out

sponge would have gotten all the film off like i said before
i was going to say go SA but that stuff is way toxic, and not fun to work with
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