Ceramic Tile on Concrete Floor

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  #1  
Old 04-02-07, 09:04 PM
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Ceramic Tile on Concrete Floor

I would like to install ceramic tile on a concrete floor in my basement.
The floor has been painted, (with latex floor paint) and I am aware that the paint should be removed before laying tile.
My problem is what to do with he expansion joint running through the area I want to tile.
The joint is 1/2 to 3/4 inches wide. Do I fill this or lay some kind of membrane down first before tiling.
The floor is stable and has not cracked or moved in the last 15 years.
WHAT TO DO?
 
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Old 04-03-07, 05:27 PM
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You need to design your tile layout so that a grout joint will line up over the control joint. Caulk this tile joint with a color matched caulk that matches the grout color.

Its a good idea to use an isolation membrane like Schluter's ditra over the entiere concrete slab as added insurance for any future movement in the slab.
 
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Old 04-04-07, 07:48 AM
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Having no experience with ditra, this comes from a somewhat ignorant position, but wouldn't a well installed coat of redgard do the same thing?
 
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Old 04-04-07, 03:38 PM
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I think Redgard would be the way to go as well. Ditra can be a pain in the .......
 
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Old 04-04-07, 04:04 PM
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Redgard may be fine here. My preference would be the ditra though.
 
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