Ceramic tile over concrete


Old 12-06-00, 01:50 PM
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I want to install ceramic tile in a basement bathroom directly over the concrete. My concern is that the floor is not completely level. The tile place said level the floor first. A friend said just make the mortar thicker where you need to. Whose correct and should the concrete be dampened first? Any advice would be appreciated.
Old 12-06-00, 06:56 PM
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Location: Katy (Houston area) TX USA
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"Level" is a relative term. The concern should center around "flat." If your concrete floor is so bad that you think it would be hard to install any floor over it, then you should think about getting it flat before you install ceramic tiles. Otherwise, go for it.


Old 12-06-00, 11:19 PM
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If the floor is not flat. Try to get it that way. They make many self leveling products and floor patch products these days that are fairly easy to use. Just follow the directions for the one you choose. Laticrete, http://www.laticrete.com makes a good one as do many other manufacturers.
In my experience getting the floor flat first and then tiling over that is much easier than trying to add mortar (thinset) where you need it.
Give it a go and let us know !!!!
Regards and Happy Holidays,
Rich Gately (Tileman1)

Old 12-07-00, 04:07 AM
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I just went through the exact same situation tiling a laundry room floor. I was at my local hardware supply store to buy a leveling product (it wasn't cheap) and the salesman said that if the floor is basically flat I could correct any unevenness with the thinset. I took his advice and it worked out well. This was my first tiling project and although the job took a lot longer than I thought it would, very little of that was related to my uneven floor. Of course, my idea of an uneven floor and your idea of an uneven floor may be very different. Good luck.
Old 12-09-00, 01:10 PM
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Talking uneven basement floor?!!

I am in the process of finishing my basement and I also added a bathroom there. the floor in the bathroom was cement and uneven....I used a product named quik-level.
It worked excellent and was so easy to use. Just mix it properly and pour down on the floor it does everything else for you.

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