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Old 02-04-2018, 09:02 AM   #1
walldocmp
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Is a shower curb with a grout joint down middle ok?

Hi all,
I will be tiling a shower curb. I know a solid piece on the top of the curb would be best. However using the trim tiles i have my question is which would be better having a grout joint down the middle or two out at the edges as shown in the two pictures below. Or are they both equally bad?
I built the curb as describe in the john bridge website with 2x4s, pvc liner, lath and masonry mix.

Thanks,
Mike
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Old 02-04-2018, 09:20 AM   #2
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Either is ok Mike if the curb is constucted properly which it sounds like it is. What does Mrs Mike prefer? I would defer that question to her.
With the outside joint like the second pic, depending on the width of the bullnose, you might need profile metal for the outside and inside edge.

Personally I like a solid surface threshold on top of the curbs I do but that's just me.
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Old 02-04-2018, 11:36 AM   #3
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There's no way the pitch on the second pic curb is 1/8 like it should be. Without miter cuts, you can pitch the top of the curb very much. It makes a clean look but the pitch is more important.

Like Evan said, the waterproofing is under the tiles so either will work. We've done both many times.
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Old 02-04-2018, 11:58 AM   #4
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It is mathematically possible that the unmitered corner tile is set at an angle so that each end of the tile is sloped 2% in a plane transverse to the curb. Those 2 lines determine a plane in which the tile would have to lie, meaning the inside and outside edges of the tile wouldn't be level, causing many further complications.

I agree it is far, far more likely that the top of the curb pictured is level.

Cheers, Wayne
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Old 02-04-2018, 12:22 PM   #5
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A flat piece of tile can be tilted but there's no way to keep the inside and outside edge level and inline with the other pieces on the curb. The tiles would need to bend to do that. You might hide it with only a 1/32 pitch or maybe a 1/16 but a curb needs more than that.
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Old 02-04-2018, 01:09 PM   #6
walldocmp
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Makes sense. Hadn't thought about the corner issue. Thanks for the heads up and the help.

-Mike
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Old 02-04-2018, 02:49 PM   #7
wwhitney
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Quote:
Originally Posted by Wayne
the inside and outside edges of the tile wouldn't be level
Quote:
Originally Posted by Dave
there's no way to keep the inside and outside edge level
Sounds like we are in agreement.

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Old 02-04-2018, 04:08 PM   #8
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I think so, I missed that part of your post. Sure would help sometimes if tiles would bend.
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