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Old 10-23-2007, 09:57 AM   #1
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Tile over concrete


My utility room has 1x6 covered by subfloor covered by 3/4" of concrete. There is tile down now that looks like a cross between peel-and-stick and regular tile, its about 1/8" thick, all seams butt together, and any side pressure at all pops them off. I want to rip them out and put nice tile over the top as we're renovating that room. Can I tile right over the concrete or do I need put put down backer board? There's no way I'm ripping out the concrete but the surrounding rooms right now are at an even height so I'm hoping the concrete will bond.....

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Old 10-26-2007, 08:13 AM   #2
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Tile over concrete


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Originally Posted by moneymgmt View Post
My utility room has 1x6 covered by subfloor covered by 3/4" of concrete. There is tile down now that looks like a cross between peel-and-stick and regular tile, its about 1/8" thick, all seams butt together, and any side pressure at all pops them off. I want to rip them out and put nice tile over the top as we're renovating that room. Can I tile right over the concrete or do I need put put down backer board? There's no way I'm ripping out the concrete but the surrounding rooms right now are at an even height so I'm hoping the concrete will bond.....


Yes you can set tile directly onto concrete.

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Old 10-26-2007, 09:21 AM   #3
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Tile over concrete


yes if your concrete show no sign of cracks so that means no movement....
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Old 10-26-2007, 09:26 AM   #4
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Tile over concrete


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Originally Posted by KUI****G View Post
yes if your concrete show no sign of cracks so that means no movement....
I'll look when I pull up the current tile but since its about 3/4" concrete sitting on subfloor and joists I don't see how it could shift/crack without the rest of the house doing so.

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Old 10-26-2007, 09:46 AM   #5
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Tile over concrete


The best answer for your situation is Edge Flooring. With traditional tile over a concrete floor you can get reflective cracking which is when the concrete cracks it will mirror that exact crack in the ceramic tile. Also any hydrostatic pressure can push mouisture up through the slab. With Edge its real tile that "floats" so cracks are irrelevant. You may want to check out www.edgeflooring.com to see it and if you have questions just hit me back. Usuing Edge over your concrete slab is the perfect answer for what your up against. Best of luck with the project.
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