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Unread 05-14-2019, 01:10 PM   #31
EDDY IN MONTREAL
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I don't know if anyone will see it since it's up there on my posts today.
Here's my question again.
Do I need expansion joints in a niche using full tiles? Please read my earlier post.
Many thanks
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Unread 05-14-2019, 02:16 PM   #32
rmckee84
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I wouldn't butt it tight, usually I leave 1/16-1/8" gap then silicone to finish. Technically yes you should leave a gap for movement, but in niches it is overlooked by many installers.
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Unread 05-14-2019, 02:16 PM   #33
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Which earlier post, Eddy, and why are we reading it again, please?

It would need to be a very large niche to require movement accommodation joints, but technically you still leave such joints at all changes of plane in the backing material. Lots of installers grout all the joints in a shower niche, though. I'm one of those.

And perhaps I don't understand your question.
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Unread 05-14-2019, 02:50 PM   #34
EDDY IN MONTREAL
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I was referring to my earlier post at 10:05 today. I had several replies since then so I didn't know if my initial question would get answered.
These chat forums are new to me and I don't know all the in's and out's of how they work. I apologize for my lack of knowledge.
At least I don't have to cut new tiles. All I have to do is trim an 1/8" off all the sides.

From what I can understand about the niche is that YES I have to leave a joint. Is there an advantage over the grout to silicone. I was planning on grouting it.

Thanks Eddy
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Unread 05-14-2019, 04:46 PM   #35
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The consideration there, Eddy, is that the grout at joints like those is prone to cracking if there is any differential movement at all in the tile surfaces. Leaving an appropriate gap and filling it with a flexible sealant helps protect against that. It also allows you to claim you're following tile industry standards if that is of any consequence to you.

Until not too many years ago the only real option for such sealant was the clear silicone and the appearance was rather less than optimal. Today, with 100 percent silicone sealants available in colors to match any grout and in textures ranging from glossy to satin to sanded, caulking such corners is much more aesthetically acceptable.

But on the inside of niches that I have built I'm still inclined to grout the whole thing. Folks who wish to criticize such action know where to find me, including the Tile Ranger hisownself.

My opinion; worth price charged.
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Unread 05-14-2019, 09:01 PM   #36
EDDY IN MONTREAL
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CX,
Once again you surprise me with your incredible knowledge and your feedback. All are very much appreciated.
Thanks
Eddy
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