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Old 10-31-2017, 08:32 PM   #76
jadnashua
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It's not all that hard to induce a little slope on the curb when setting it in the thinset, or, to use a sander to do it to the top.

FWIW, Schluter DID originally have a slope on their curbs. People ignored the instructions and markings and installed them with the slope going out more often than not...they stopped and made them symmetrical. Talk about not following instructions...there are way too many people that never read them, let alone follow them.

99+% of the water flows off of the curb, and the very small amount that might get below can't go far. Typically, it evaporates in between uses. If it were a mudbed, it would be drawn deeper into the material, and have a harder time evaporating. Thinset is lots denser than deckmud, so the penetration is way less. Throw in the fleece that disrupts the flow, and it really isn't a big issue over that short distance.
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Old 10-31-2017, 08:37 PM   #77
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Quote:
Originally Posted by Ken
Even Schluter's CSR recommends sloping the tile when installing it. Clearly the better solution is to preslope the curb then install the membrane but I have a hard time holding a contractor to that standard if the manufacturer doesn't use it.
And that's unfortunate on Schluter's part as far as I'm concerned, Ken. It's the waterproof portion of the installation that is required by code to be sloped to drain, not just the finish material. And manufacturer's recommendations must still comply with building codes. Why don't they tell you to install your Kerdi on the floor and just slope your tiles to the drain?

My opinion; worth price charged.
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Old 11-01-2017, 04:46 AM   #78
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Same goes with the niche base slope, Schluter builds in no slope...
FWIW neither does Wedi. I asked about this and was advised that they didn't find it necessary due to the small size of the niche, presumably whatever water gets in there is either going to run out or be able to evaporate quickly.

The Wedi curb is sloped.
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Old 11-01-2017, 08:27 PM   #79
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I wish I could make this up. The contractor started the leak test around noon, which apparently was a 2 hour process with the shower running for 40 minutes. I came home to find a ball valve added to the shower head and a slow drip from it into the water filled pan. Apparently they used the shower to fill the pan for the leak test (first no no), broke the mixing valve in the process, couldn't get the water to stop and added a faulty valve onto the shower stem.

Easy way to pass a 24 hour leak test... Add water throughout the process. I ran to the store and spent $2 on a 1/2" cap. Back in testing business.

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Old 11-03-2017, 09:29 PM   #80
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Passed leak test, holding solid for 2 days.

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Old 11-16-2017, 09:42 PM   #81
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Not much had happened since this project extended into a week trip I had planned. Today was tile install day and when I came in to check on progress I found the installer using globs of thinset to make up 1 1/4" out of plumb/straight. I didn't check the substrate after the prep work and the massive quantities of thinset were my first clue something was wrong. Sadly this was deemed normal practice by the subcontractor and upon talking to the GC the entire shower is coming back out so that the walls can be furred. I called Mapei to confirm I wasn't crazy and they affirmed that thinset isn't used to level a surface but if it is to limit it to 1/4" at a time.

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Old 11-16-2017, 10:18 PM   #82
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NO dot setting, Aside from the structural problems, you'll collect water behind the tiles.

In showers you are supposed to have a minimum coverage of 95%
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Old 11-16-2017, 10:22 PM   #83
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Did you really say 1 1/4" out of plumb?
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Old 11-17-2017, 10:01 AM   #84
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Unreal...
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Old 11-17-2017, 05:18 PM   #85
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Quote:
Originally Posted by tatumjonj View Post
Did you really say 1 1/4" out of plumb?
Yes, no typo. Apparently the rough framing was done very rough and the tile installers don't consider fur strips part of their job. Currently the tile installer is removing the substrate so a carpenter can come in and straighten the wall. I may never have my bathroom back.

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Old 11-17-2017, 05:41 PM   #86
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Thank goodness you are able to recognize it now before the job gets done, and your GC is fixing it. Hopefully, he is learning a BIG lesson here.
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Old 11-17-2017, 05:43 PM   #87
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That wall is a thinset manufacturer's dream.
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Old 11-17-2017, 08:56 PM   #88
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I'd like to think a blind man on a fast horse could have seen 1 1/4" out of plumb. I can't believe it took until tile was being installed to come across that one.
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Old 11-17-2017, 10:10 PM   #89
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The incompetence on this job is amazing.
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Old 11-18-2017, 11:55 AM   #90
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In post 81, is that pic showing the back wall and niche? I'm trying to wrap my head around it.

Must be a thinset shortage.
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