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Old 01-08-2012, 10:47 PM   #1
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?-ceramic tile on concrete floor-?


Where is a good place to learn the process of laying ceramic tile onto a concrete slab. I live in Northern Minnesota and experience every season (to an extreme). Do I need to prep the floor with something or lay down some kind of membrane? thanks for your time and patience (plus knowledge).

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Old 01-08-2012, 10:55 PM   #2
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?-ceramic tile on concrete floor-?


Depends, what's the floor look like?
Cracks, gets wet when it rains, has it been sealed or painted, is there lots of low areas?

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Old 01-08-2012, 11:20 PM   #3
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?-ceramic tile on concrete floor-?


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Originally Posted by joecaption View Post
Depends, what's the floor look like?
Cracks, gets wet when it rains, has it been sealed or painted, is there lots of low areas?
The floor had one noticeable crack, It has not been sealed or painted, it is relatively level But I am not there to monitor it twenty four seven except in the warm months. There is some moist looking areas after the snow melts, but there is usually a lot of snow.
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Old 01-08-2012, 11:48 PM   #4
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?-ceramic tile on concrete floor-?


I would lay Schluter Ditra on top of the concrete and then lay your tile. You CAN get tile to adhere very nicely to concrete but any movements from your floor will transfer right to your tile and lead to cracked grout and possible cracked tiles.

The Ditra gives an uncoupling membrane between your floor and your tile. Typically with Ditra you will use a modified thinset to adhere the Ditra to the floor but with concrete you should use an unmodified thinset to set your ditra to the concrete and also to set your tile to the Ditra.

Also, if your floor is going to be in extreme conditions, very hot to very cold, you might want to use an epoxy based grout which is flexible and may not crack.
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