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Unread 09-26-2022, 10:46 PM   #1
Forrest
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Ditra heat spacing between sheets

I'm installing Ditra heat in my bathroom, using a 26.7 sqft 120 cable, so its a relatively small space.

I just set my membrane sheets, and my lugs are pretty close to perfectly in line sheet to sheet which I am happy with. However in between a few sheets I have some small gaps, maybe an 1/8th in at the largest.

Is this detrimental to my install? All I saw on the install page from Shluter was to "abut the sheets" or something along the like. I tried my best but with some Thinset oozing out in between sheets I must have missed some details.

I'm not shooting for perfect waterproofing, but just want to make sure the wire will function properly.

Thanks for the help, having fun working through my first bathroom remodel!
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Unread 09-27-2022, 05:40 AM   #2
pls
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Gaps are not a problem at all. If you want the seems waterproof you will need to go over them with kerdi band after the cable is installed.
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Unread 09-27-2022, 11:35 AM   #3
Dan Marvin
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As Phil stated, the gaps aren't an issue although I would recommend cleaning out any mortar that has come up beyond Ditra heat. Don't lay cable in the gap itself, make sure it is securely installed between the studs on the sheet. KERDI-BAND at the membrane seams and at the connection to the wall will make the assembly waterproof. Thanks for choosing Schluter.
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Unread 09-27-2022, 12:24 PM   #4
Forrest
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Thanks for the reply. Next question -

After cleaning up Thinset, I noticed I have a couple air pockets. Maybe 3 lugs x 2 lugs at the most in 2 or 3 places.

Do I need to cut these out and put in new lug patches? Putting down 12x24 porcelain tiles.
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Unread 09-27-2022, 12:56 PM   #5
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Yes, I would. You want as close to 100% coverage as possible.
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