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Unread 08-04-2002, 10:36 PM   #1
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I have a 1x4 slat subfloor with an adjoining 3/4" hardwood floor. The subfloor is flat and out of level in one direction by 1/2" in 8'(lower at the wall away from the hardwood). The floor can't be raised much more than the thickness of the 3/8" 13 x 13 tile above the hardwood floor. Is there a way to level a Ditra floor? Otherwise my options would be to use 1/2" plugged ext. plywood and 1/4" cement board with slc, or rip up the subfloor and replace with plywood and float mud from 3/4" to 1 1/4" thick. 2 x 8 joists, 16" o.c., 12' span, braced, floor feels surprisingly solid. Any opinions? Haven't used Ditra yet.
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Unread 08-05-2002, 02:15 PM   #2
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Forgive me, but I honestly don't understand the question...I'm not sure what you mean by leveling a Ditra floor?...Ditra has to be layed on a smooth flat surface, so what ever you do to get it this way, doesn't have anything to do with the Ditra. You could I guess, level out the floor with slc, add ply or cbu to that, and then add the Ditra on top. However you level it out, the Ditra should be on top....but now that I think of it, I have put mud down on Ditra...Geez, I really am confused!?

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Unread 08-05-2002, 04:33 PM   #3
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Shame on you for confusing Bri.

What he's trying to say is that the Ditra has to end up right under the tile. Any leveling needs to be done beforehand.

I don't know that a half inch is worth worrying about.
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