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Old 10-22-2010, 05:57 AM   #1
Mulligandog
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Redi Niche tiling problem

First off, this site is amazing, this is my first big tiling job and have learned a lot from the experts (and not so experts). I bought the preformed niche for our shower install and after weeks of prep work, finally got to tile the shower. I tiled the niche by applying the thinset to the small cut tiles I had and set them in place. Last night I went to admire my handiwork and when I touched one of the tiles, it came off in my hand...then all the rest did the same. What did I miss in my tiling? Is it just the fact that I didn't spread the thinset directly onto the niche? Is there some special prep work I need to do on the plastic? Help please!
Greg
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Old 10-22-2010, 06:10 AM   #2
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Welcome aboard, Greg.

I don't know what happened. Maybe post a picture or two?

I will move you to the Advice Forum where you will get more exposure.
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Old 10-22-2010, 06:18 AM   #3
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Hi Greg

As Mr. Bridge himself indicates, we need a bit more info here. Questions that immediately come to mind:

1 - what thinset did you use?

2 - what waterproofing did you use to tie the niche into the walls?

3 - what kind of tiles were you installing?

4 - did this happen anywhere else in the installation?

5 - is there anything unique about the way you tiled the niche vs non-failing areas?

This could be as simple as the thinset skinned over, or the niche needed to be primed differently. Or it could be something else altogether. The more details you can provide, the better we can help. Otherwise, your answer sticks at "yep, ya did somethin' wrong there..."
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Old 10-22-2010, 07:49 AM   #4
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1. Thinset was Home Depot Versabond that I mixed to a peanut butter ish consistency.
2. Not sure I understand this, it's a premade niche that fits between the studs, screwed in.
3. Ceramic 12x12 tiles in the shower, these were cut down to fit into the niche.
4. Every other tile (installed over hardiboard, with the same thinset) is stuck solid (I checked every dang one after that...)
5. Nothing that I can think of is different than how I installed the tiles that are stuck other than they were put directly onto the plastic of the niche and not hardiboard. Instructions said 'install and you're ready to tile'.

It just seems like the surface isn't porous enough to bond with the thinset and you mentioned priming the niche, what exactly do you mean? I just slapped the tile on with the thinset, no prep work at all to the niche.

Appreciate the concern, I knew you guys would come through!

Greg
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Old 10-22-2010, 07:53 AM   #5
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Greg,

Who made this niche? What color is it? A quick coat of redguard or hydroban may solve the problem, but we'd like more info first.....
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Old 10-22-2010, 09:16 AM   #6
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This is the listing from Lowes, it's black.


Tile Redi Black Shower Caddy

Item #: 190839 | Model #: RN1620D
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Old 10-22-2010, 09:21 AM   #7
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Hey greg - lots of good there. I like the Hardiebacker (tho I prefer Durock) and Versabond, myself.

In #2 above, I'm trying to get a feel for your general waterproofing. What did you use? Poly sheeting or roofing felt on the studs behind the Hardie? Then you just cut that out for the niche? It seems like that may be what you did, so the answer is "nothing" - there's no liquid-applied waterproofing on the niche. Paul mentioned two very common types.
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Old 10-22-2010, 09:33 AM   #8
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Gotcha Ed, that's exactly what I did, poly sheeting behind the Hardi, cut out for the niche. I'm gonna try the redguard or hydroban if I don't hear of another solution.
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Old 10-22-2010, 09:43 AM   #9
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Just so we're clear - the tiles are coming up w/ the thinset still solidly bonded to them? The niche is essentially bare now?
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Old 10-22-2010, 09:43 AM   #10
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What Ed said,

If you can get your hands on some Hydroban, that would be my first choice. It sticks to darn near everything
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Old 10-22-2010, 10:23 AM   #11
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Exactly correct Ed, tile has thinset securely on it, niche is clean. Is hyrdoban something I can get at HD?
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Old 10-22-2010, 10:32 AM   #12
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Probably not, it's a Laticrete product. Lowes might stock, but probably can special order if they don't have it there.
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Old 10-22-2010, 10:34 AM   #13
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redgard is avaiable at HD, Hydroban is not that I know of. Call tech support to find out where you can get it locally 800-243-4788 x235
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Old 10-22-2010, 10:37 AM   #14
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Thanks,
I really appreciate both of your guys' help, I was worried I'd feel like a dumba$$...
I'll post some pics when I'm done!

Thanks again,
Greg
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Old 10-22-2010, 10:38 AM   #15
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http://www.tilestoreonline.com/Latic.../93-9255-1.htm

$70, free shipping online.
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