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Old 11-30-2011, 12:03 PM   #1
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bathroom subfloor (Basement)


I am getting very close to doing my basement bathroom floor, my basement is done with dricore, HOWEVER, my bathroom we want stone tile, and you can not dricore then put stone tile over it... so the basement is 7/8" higher everywhere then the bathroom, I am looking for a fix to this... was wondering if this idea would work...

(note: i do not want to use self leveling concrete, I've had nothing but bad luck, and if I ever redid the basement again I'd have a much higher spot if dricore was ever ditched)

my idea right now is to put 1/2" or 3/4" ridgid foam down then put a plywood subfloor over that, tapcon that down, ditra over it then tile

good idea? bad idea? other ideas?

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Old 11-30-2011, 02:07 PM   #2
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Why not glue down a couple layers of hardibacker?

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Old 11-30-2011, 02:09 PM   #3
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Why not glue down a couple layers of hardibacker?
I was told in the past that is a bad idea
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Old 11-30-2011, 02:11 PM   #4
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Originally Posted by BlueBSH View Post
I was told in the past that is a bad idea
You might be right? Why?
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Old 11-30-2011, 02:13 PM   #5
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You might be right? Why?
no idea, someone on here told me that in the past
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Old 11-30-2011, 02:50 PM   #6
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Originally Posted by BlueBSH View Post
no idea, someone on here told me that in the past
Maybe trapping moisture would eventually cause the glue to fail. Use tapcoms too. I don't know. I'm just a carpenter, nota tile guy.
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Old 11-30-2011, 08:45 PM   #7
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no one else that has expiernce in this?
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Old 11-30-2011, 08:48 PM   #8
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Quote:
no one else that has expiernce in this?
You want a voice-of-experience?

DON'T DO IT!
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Old 11-30-2011, 08:49 PM   #9
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Quote:
Originally Posted by Bud Cline View Post
You want a voice-of-experience?

DON'T DO IT!

and the reason not to is? sorry but "dont do it" is never enough for me, I like facts and reasons behind ideas especially when building science says its an ok idea

http://www.buildingscience.com/docum...g-your-basment figure 1 is the idea I was going for

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Old 11-30-2011, 08:54 PM   #10
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Natural stone tile installations require double the strength of the substrate as what is required for regular ceramic tile. Natural stone tiles have imperfections and faults built in and require a solid base for installation.

Foam board ain't the answer. Especially foam board with plywood Mickey Moused over the top of it. The foam board will give, the plywood seams will rock and roll, the stone tile will remove itself in no time.

There how's that?

DON'T DO IT!
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Old 11-30-2011, 08:57 PM   #11
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Quote:
Originally Posted by Bud Cline View Post
Natural stone tile installations require double the strength of the substrate as what is required for regular ceramic tile. Natural stone tiles have imperfections and faults built in and require a solid base for installation.

Foam board ain't the answer. Especially foam board with plywood Mickey Moused over the top of it. The foam board will give, the plywood seams will rock and roll, the stone tile will remove itself in no time.

There how's that?

DON'T DO IT!
Thanks for the explination, only way to learn is to get the reason why!

What about skipping the stone tile and going with ceramic or a floating ceramic? but using the same flooring system (xps then ply)
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Old 11-30-2011, 09:03 PM   #12
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Quote:
What about skipping the stone tile and going with ceramic
Same problem. Self demolishing grout. A urethane grout might hold up.

Quote:
What about a floating ceramic?
Same problem. You could try Snapstone, it comes with its own urethane grout but I would be more comfortable with the tile adhered to the substrate. But then, the major issue is the substrate.

I still have a suggestion, wanna hear it?
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Old 11-30-2011, 09:26 PM   #13
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I still don't know why my hardibacker idea won't work. Anybody?
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Old 11-30-2011, 09:27 PM   #14
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Go ahead and do it and you'll see why it won't work.

Have you ever attached any cement board to concrete?
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Old 11-30-2011, 09:30 PM   #15
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Quote:
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Go ahead and do it and you'll see why it won't work.

Have you ever attached any cement board to concrete?
What the heck kind of an answer is that?

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