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Old 12-21-2007, 08:53 AM   #1
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Tiles: Re-grout


A couple of months ago I had a so called pro to tile my living area (I was going to DIY but I had enough of it after moving 2000 lb of tiles), this guy took the shortcut by laying tiles directly over concrete slab without leveling it (the original builder must take part of the blame for such uneven slab). The end result looks awful, this fu*kwit also used "off white" grout from two different manufactures, the floor ended up with two shades of grout.

Now there's nothing much can be done about the unlevel tiles, but I have noticed the grout has shrunk a bit, so I'm thinking of re-grout on top of the old grout. Is this a good idea or don't bother?

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Old 12-21-2007, 10:44 AM   #2
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Hi Peter,

This person obviously isn't a tilesetter. Where did you find him? Did you ask to see his license? Did you check with your State? Was his price too low? Well.....sorry this happened.

He may not have known the floor wasn't as flat as it should have been? Then when he realized it, he may have figured you might not approve all of the added charges to fix it? Just throwing out some possibilities from experience how people react.

If the grout has shrunk, maybe he used unsanded grout instead of sanded? Sounds like you may have 500-600 sq, ft. of tiles there? What does he have to say about this?

Re-grouting over the top is NOT likely to work so good? But you can re-stain it to make it all the same color. BIG job though.

Jaz

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Old 12-21-2007, 10:55 AM   #3
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Tiles: Re-grout


to level concrete is a big and expensive job .... the tile layer should inform you though if he is professional that the floor is not level and asking you if you want to pay to level it....
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Old 12-23-2007, 06:08 AM   #4
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It was a referral, he did a friend's and my parent's place last year, both jobs looked pretty alright to me, so I didn't asked too many questions and assumed he knows the stuff. <-- what a huge mistake!

I did point out to him about the uneven floor, but he said not to worry about it as he will apply more adhesive at low spots to make the tiles level. <-- what a load of baloney!
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Old 12-24-2007, 12:41 PM   #5
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He probably did try to put a little more thinset on the backs once he set them and noticed it was low in some areas? But that is no way to install tiles. If the floor isn't flat to start, back buttering isn't going to help much.

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Old 12-30-2007, 01:55 PM   #6
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Tiles: Re-grout


Peter,

You can find out if your grout is sanded or non-sanded by applying vinegar to your grout. If it fizzles, it`s sanded. If it doesn`t fizzle, it`s most likely non-sanded. The only way that sanded grout will not fizzle is if there is a sealer on top of the grout. If there is, you can use an awl or a screw driver and scratch the grout in an inconspicuous area. If it still doesn`t fizzle, then you know it`s non-sanded. Ceramic and porcelain floors should have sanded grout. Much stronger. Natural floors should use non-sanded. Scratch easily.
If it`s non-sanded and it`s ceramic or porcelain, I would recommend removing the grout(BIG JOB) and putting in sanded. If it is sanded, you can add if you want or you could color seal if it`s not too bad.

I would recommend you contact your local Tile and Grout cleaning specialist and he can direct you properly.

As for the unlevel tiles...if there are a few that are unlevel, you can remove those, use a good floor leveler and install some new ones. The thinset has to cure for at least 24 hrs before you grout. You should be able to slide a coin right across your floor without hitting any lippage if it was done by a pro.

Just my 2 cents

Ron

Last edited by RonR; 12-30-2007 at 01:58 PM.
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Old 01-01-2008, 04:41 AM   #7
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I know it is now to late but aren't there self levelling products by Davco that will level concrete floors prior to laying tiles from 10mm to featheredge?
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