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Unread 08-11-2015, 06:56 PM   #1
figaro
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Clear Glass Tile in a Shower

2 winters ago I installed some very expensive transparent glass tile on 1 wall of a curbless shower, floor to ceiling, as per designers spec. I have removed and replaced the bottom row once due to water getting in and wicking up from the floor and discoloring the white thinset behind it giving it a brown tint. When I reinstalled it I was very thorough in actually setting the bottom edge of the tile where it meets the floor into a clear silicone bed then siliconed it again after it was installed. As I'm sure you've guessed, customer just called and discoloring again. These people are snow birds and when the shower gets a chance to dry out while they're away, it seems to almost go away.
I don't know what else I could have done or could do (other than not used clear glass tile against the floor in a shower).
I thought I read a discussion once, (maybe here), about some thinset or adhesive that wouldn't wick water or discolor???? (or was that just in my dreams)
The shower is a kerdi shower and the glass tile are a thick rhomboid shape.
If you guys have any thoughts I would like to hear them.
Thanks
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Unread 08-11-2015, 11:37 PM   #2
Tool Guy - Kg
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Kerdi showers require unmodified thinset over them, but glass tiles generally need heavily modified. This contradiction generally means that Kerdi and glass don't go together so well.

How large are your tiles and which thinset did you use?

And how on earth did you remove tiles w/o tearing the Kerdi to shreds?

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Unread 08-12-2015, 06:48 AM   #3
figaro
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es

Yes I'm aware of the contradiction with kerdi, glass, modified vs. unmodified.
I used a modified probably custom's flexbond. The tile was about
6" tall and 4" wide in a diamond shape about 1/2"+ thick. Very irregular shape so had large grout joints. I waited probably about a week before grouting it. Seemed to have worked out well as far as curing when I tore off the bottom row later.
They were stuck well just had to be very careful removing them.
Maybe I can post pics later if I have time.
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Last edited by figaro; 08-12-2015 at 07:02 AM. Reason: added info
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Unread 08-12-2015, 08:38 PM   #4
T_Hulse
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For clear glass tile in wet areas, I will only use epoxy as a setting material. It doesn't darken when wet (water can't even get to the back of the tile if it's set right). The last one we used was Ardex WA, it has an extremely bright white that makes the tile really look great, especially with the translucent pearl-type finishes on clear tile.
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Unread 08-14-2015, 07:54 AM   #5
figaro
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So I'm guessing the epoxy won't wick up the moisture because its not porous like regular thinset. Didn't know there was such a thing. Good to know for future reference.
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