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Old 05-20-2013, 02:31 PM   #1
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Tile installation with plank subfloor, only 3/4" to work with


We're in the middle of a kitchen remodel and are about to start installing a new floor, but I'm not sure if we're going to be able to do it right without it being noticeably higher than the adjacent hardwood.

We removed the old kitchen floor down to the plank subfloor. We found that the hardwood that sits next to the kitchen is 3/4" thick and is separated from the plank subfloor only by a thin moisture barrier.

I'd like my tile job to be pretty much flush with the hardwood. A little higher is okay.

The guides I've seen on the web recommend installing 1/2" OSB underlayment, another 1/2" of cement board, and then the tile on top of that. The tile is 8mm, or about .3", which would mean the completed floor would be more than half an inch higher than the hardwood.

Ditra is only 1/8" thick, but the manufacturer still recommends a 5/8" plywood or OSB underlayment. We'd be more than a quarter inch above the hardwood with that.

Are there products on the market to provide the necessary rigidity and tiling surface to do a half inch of underlayment? It's looking the answer is that I'm going to have to live with a raised kitchen floor unless I want to rip up all the hardwood.

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Old 05-20-2013, 02:43 PM   #2
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Tile installation with plank subfloor, only 3/4" to work with


Why not remove the last of the subflooring?
It's not doing you any favors and I'd bet it not all flat.
Once removed you could use 3/4" Advantec T & G and have a flat soil subfloor.
I've never seen 1/2 tile board used on a floor only 1/4". Tile board adds no strength to the flooring it's only for something for the tile to grab onto.

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Old 05-20-2013, 03:46 PM   #3
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Tile installation with plank subfloor, only 3/4" to work with


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Originally Posted by joecaption View Post
Why not remove the last of the subflooring?
It's not doing you any favors and I'd bet it not all flat.
Once removed you could use 3/4" Advantec T & G and have a flat soil subfloor.
I've never seen 1/2 tile board used on a floor only 1/4". Tile board adds no strength to the flooring it's only for something for the tile to grab onto.
Unfortunately the joists don't line up with the edges of the kitchen. If I cut my planks there, the surrounding finished hardwoor floor would fall into the basement.

Also it's looking like I'd probably want very thick Advantec because my joists are spaced 48" apart.
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Old 05-20-2013, 04:45 PM   #4
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Tile installation with plank subfloor, only 3/4" to work with


If there that far apart I'd forget about tile.
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Old 05-20-2013, 06:38 PM   #5
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Tile installation with plank subfloor, only 3/4" to work with


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If there that far apart I'd forget about tile.
Yep, just got back from looking at luxury vinyl tile. Thanks for replying back so quickly.
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Old 05-22-2013, 02:34 AM   #6
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Tile installation with plank subfloor, only 3/4" to work with


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luxury vinyl tile.
Now, THAT is a perfect example of any oxymoron!!!!!!

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