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Old 03-06-2019, 12:02 PM   #1
Jonnyshark
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Did I screw up? Kerdi help

To make it short. Can I use the unmodified thin set over quick set lite 45 and all purpose compound. I got ahead of myself.
Thanks for your help!

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Old 03-06-2019, 12:12 PM   #2
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https://www.schluter.com/schluter-us...et-mortar-type


I think so. Just be darn sure you dampen the sheetrock with a sponge or spray bottle or something similar before you apply the thin set. Do not get to far ahead of your self on the dampening part.
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Old 03-06-2019, 12:34 PM   #3
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I’d prime the joint compound first

https://www.schluter.com/schluter-us...ll-tape-joints
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Old 03-06-2019, 01:09 PM   #4
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Do you recommend a particular latex primer? Kilz2 Latex for instance?

Thanks for the quick replies.
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Old 03-06-2019, 01:32 PM   #5
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Kilz2 latex would be sufficient
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Old 03-06-2019, 02:53 PM   #6
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You can also put primer made for sheetrock and joints. Often listed as PVA .....

Lots cheaper than kilz and is actually made for it.
Box stores and professional paint stores will all carry something for the bare sheetrock or joints that usually is pretty economical.

https://www.lowes.com/pd/valspar-pro...yABEgJHj_D_BwE
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Old 03-06-2019, 09:15 PM   #7
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I primed it today. Would it be ok to thin set membrane tomorrow?
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Old 03-07-2019, 10:27 PM   #8
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Yes, as soon as the primer is dry
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Old 03-08-2019, 09:26 PM   #9
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Depends on the primer you used. Look for the specs for it. Many are dry to the touch in perhaps a hour. But need to wait 3 or 4 hours perhaps to recoat. Longer to cure
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Old 03-17-2019, 11:44 AM   #10
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Small gap between Kerdi wall and Tray

Is it OK or recommended to use thin set for the small gaps, 1/2 inch or less, between Kerdi covered sheet rock and Kerdi shower tray? Kerdi membrane has been installed from bottom to top.

Thank you!
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Old 03-17-2019, 11:49 AM   #11
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Thinset tends to shrink as it cures and 1/2" is a bit large to fill with it. You could mix up some brick morter (AKA "mason mix") and force it in...
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Old 03-17-2019, 12:07 PM   #12
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Depends. Specifically which mortar are you using, John?

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Old 03-17-2019, 12:09 PM   #13
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Lowes Mapai uncoupling morter
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Old 03-17-2019, 02:02 PM   #14
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If Kerdi has already been installed top to bottom, the gap is behind the Kerdi??
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Old 03-17-2019, 02:43 PM   #15
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The gap is between the sheet rock cover by kerdi membrane and the foam schluter shower pan. Due to the end of sheet rock slope.
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