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Old 05-03-2019, 07:26 AM   #16
Lou_MA
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Kerdi patch installed with unmodified thinset with 2Ē overlap on all sides.

Yes, let it dry before redoing flood test.
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Old 05-03-2019, 07:29 AM   #17
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What Lou said. Let the patch cure for at least 24 hours before testing again, longer if available.
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Old 05-03-2019, 07:31 AM   #18
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What Lou Said -> Patch with Kerdi, 4" minimum patch size for thinset.

I'd personally use Kerdi fix or Sikaflex 10.1 oz. Construction Concrete Sealant to bond the patch versus thinset.

Do I hear an echo?
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Old 05-03-2019, 08:02 AM   #19
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I'd also hit it with a smooshed in and smoothed blob of Kerdi Fix.

Still need to let it dry though.
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Old 05-03-2019, 09:06 AM   #20
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I would just make a patch as Lou first stated and install it with thinset mortar. If that won't work, the whole shower receptor is gonna leak. Patch it and forget it.

My opinion; worth price charged.
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Old 05-18-2019, 06:13 PM   #21
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Thin-set covrage

Hey guys-
Iím having issues getting good thin set coverage on my tiles. Iím using 12x24 tiles for the shower wall and using 1/2x1/2 square trowel. When I check for coverage, there are still spots where the trowel marks look to be untouched. Iíve tried back buttering. Anything else? Thanks Iím advance.
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Old 05-18-2019, 08:23 PM   #22
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Happened to me too. Same tile size and trowel. It required a bit of extra combing after pulling it off. It is extra work since you have to pull more tiles and carefully add a bit of mortar before combing it in again. That is short of going to a larger trowel which I would avoid at all cost as this will eat up a lot more mortar and make the installation more unwieldy. The reasons for what you are seeing are probably a slight bow in the tile and a slightly uneven wall surface. Regardless, those 12x24 tiles eat up a lot of mortar to achieve close to 100% coverage and to retain a bit of wiggle room to work out all the lippage issues.
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Old 05-18-2019, 10:18 PM   #23
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Greg, one thing that can help is that you notch your tiles across the 12" dimension. Makes it easier for air to be forced out when you move your tiles to flatten the notches.

My opinion; worth price charged.
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