Built Up Mud Bed Or Mud Bed Over T & G Floor? - Tiling, ceramics, marble - DIY Chatroom Home Improvement Forum

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Old 02-16-2009, 11:45 AM   #1
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built up mud bed or mud bed over T & G floor?

I have a house going up on a slab. Everything but the bathroom is furred up with 2x4s directly off the slab, then the wood flooring goes on the 2x4's. I want tile in the bathroom and applying the tile directly to the slab would be easiest but then there would be a large difference between the bathroom floor height and the rest of the house. I was thinking of either 1) screeding up an extra thick mud bed to bring it up to level, or 2) furring up 2" with a sideways 2x4, 1" T & G spruce, then a 1.25" typical mud bed on that. Plywood is not being used in the construction, so it is either no mud bed, thick mud bed, or mud bed over the boards. Any thoughts would be appreciated.


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Old 02-16-2009, 03:51 PM   #2
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Screeding up an extra thick mud bed to bring it up to level would be the best ,go for it


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Old 03-09-2009, 06:14 PM   #3
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Attach galvinized lath to the slab and put the mud on that.
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Old 03-09-2009, 06:17 PM   #4
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How much height do you need?, sounds like a lot if you want to build it up with a sleeper system, then mud over that.
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Old 03-10-2009, 08:36 AM   #5
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Well, a mortar job would do if you are reasonably sure the slab is stable; if so, or even if unsure, I'd use either 15lb felt or 6mil polyethylene cleavage membrane under - and wire mesh in - the mud.

Or a bond coat on the slab, no mesh, then mud, then Ditra.

Why no plywood? would OSB be allowed? have you put a membrane under the 2'4s that sit directly on the salb? are you really sure there's no moisture?
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