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Old 07-27-2009, 02:06 PM   #1
joleger
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Join Date: Apr 2009
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Heat Mat and Ditra...what type of thinset?

Hey Guys,

I read a bunch of the other "heat mat and ditra" threads but I havn't found an answer to my question. Maybe I didn't look hard enough....if so I apologize.

Schluter recommends modified thin set, heat mat, un-mod thin set, ditra.

My question is.....my mat is only 36"x60" and it is going down in a space that is only 50"x68".....do I really need the two types of thin sets? It will be a major PITA to mix two types for such a small space. Plus my ditra will be part on the bare floor and part on the mat.

Please tell me that the modded thin set will be fine.

Thanks for your advice

Cheers

J.O.
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Old 07-27-2009, 02:25 PM   #2
flipr
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First question will be....

what kind of subfloor/substrate are you installing on?
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Old 07-27-2009, 02:33 PM   #3
joleger
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wood floor. 3/4" OSB over eng. trusses 16" on center....and another 1/4" plywood on top of that...glued and screwed.

Not sure if it matters but I am using a NuHeat mat
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Old 07-27-2009, 02:33 PM   #4
John Bridge
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Hi J.O. Welcome aboard.

It's not what they recommend; it's what they specify.

Even so, I'd use the modified everywhere on the floor when installing the heat mat. Then switch to unmodified.

Or use VersaBond throughout. I've tested it through the years, and I know it sets up.
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Old 07-27-2009, 02:36 PM   #5
joleger
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Versabond is the modded thinset that I have so I think I will go with that everywhere to avoid switching thinsets half way through the job.
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