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Unread 11-24-2015, 11:34 AM   #1
sdsmith
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Backboard not plumb with tub flange (flange bump)

Hello all,
Ready to tile wall around a tub and noticed that the tile will bump on the first row by about 3/16" on the faucet side.
Will the thin set (using Flex-bond with a 1/4x1/4 trowel for 9x12 ceramic tiles) span this gap?
Concerned that adding another piece of backer-board will make the mixing valve set back to far..
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Unread 11-24-2015, 08:24 PM   #2
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Welcome! A first name would work a lot better for the signature line.

I'm not really sure I understand the issue. A photo would be very helpful. You can attach photos by using the Manage Attachments button below the box when you are replying.

Thanks
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Unread 11-24-2015, 10:59 PM   #3
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sorry about that...
My name is Sean.. I have attached a pdf file that will hopefully explain my situation better. The problem came about when I set the tub in mortar, attached the drain and overflow. I had meant to "split" the difference between the "back side" and the "front-side" (which would have eliminated this problem) but by the time everything was done, it was snug on the back and had a larger space on the faucet side.
I am current thinking of adding another piece of DensSheild (1/4-inch) on top of the current 1/2-inch DensSheild board and sealing with HydroBan, unless I were to hear from the pros that the thinset would makeup the difference...
If not, fine...I wanted to start tiling this holiday...(what a way to spend the holidays).... Thank you, Sean
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File Type: pdf Guest bathroom tiling.pdf (14.1 KB, 178 views)
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Unread 11-25-2015, 01:35 AM   #4
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Shimming the wall out at the.studs would be a better way to solve that problem.
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Unread 11-25-2015, 07:32 AM   #5
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Wall is already up, ripping off not an option..Sean
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Unread 11-25-2015, 08:45 AM   #6
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You could add more backer, but I wouldn't seal Densshield with Hydroban. I would treat it just the same as the other panels you have on the walls.

You'll have to build up that wall all the way out to the corner, or to the nearest wall intersection. Not knowing the layout of the room, I can't tell you how that will work out.
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Unread 11-25-2015, 10:21 AM   #7
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Why not just start the tile at the silicone bead level?
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Unread 11-25-2015, 10:58 PM   #8
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Thinset won't cut it. You'll definitely have to build the wall out a bit if you can't get the pan centered.
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Unread 11-25-2015, 11:04 PM   #9
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Quote:
Originally Posted by Sean
ripping off not an option
Why not? It may not be what you want to do, but it's probably your best move
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Unread 11-26-2015, 01:13 PM   #10
sdsmith
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"Tiger Mountain Tile Inc Thinset won't cut it. You'll definitely have to build the wall out a bit if you can't get the pan centered. "

Jim, thanks for the information. That's what I needed to know.
Just added the 1/4" on top of the 1/2" Densshield. Will seam corners and butting joints with fiberglass tape and HydroBan tomorrow (identical process performed to the existing 1/2" DensShield panel).

Kman....only had to add 16-inch x 32-inch piece of 1/4" drywall to plumb out the wall above the backer board.

Thanks again to all.
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Unread 12-14-2015, 03:53 PM   #11
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Vertical Grouting question on the first row of tiles

Good afternoon,
I have search, but have been unable to locate anything on filling the vertical space on the first row of tiles around my acrylic tub (or more likely, I just don't know how to search correctly).
I set the backer-board above/on the tub flange and tiled. The tub flange is roughly 1-1/2 inches in height and the tiles cover the tub flange (there is a gap between the tile and the tub). My question deals with this 1-1/2 inch gap between the tiles (3/16-inch grout spacing x 1-1/2 inch length) on the first row of tiles.
There is nothing behind or backing up this 1-1/2" section of tile (i.e. no thin-set on the tile or between the tile and the acrylic tub flange for this 1-1/2 inch).
Should I fill with matching grout colored silicone/chaulk (will this adhere to the tile or will I be repeating the process every month)?
Attached is a pdf and JPEG file (same drawing, was not sure that the JPEG is large enough to view) that will hopefully show what I am talking about. Thanks.Name:  grouting first row.jpg
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File Type: pdf grouting first row.pdf (38.2 KB, 98 views)
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Unread 12-14-2015, 06:20 PM   #12
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Sean, let's keep all questions related to this project on this thread so that the history is in on place, and questions and answers aren't duplicated.

How big of a gap is there between the flange and the back of tile?
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Unread 12-14-2015, 09:12 PM   #13
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"Sean, let's keep all questions related to this project on this thread so that the history is in on place, and questions and answers aren't duplicated."[/b][/b]
Will do...thanks..

"How big of a gap is there between the flange and the back of tile? "
The difference between the two is approx 1/8-inch on the faucet side, 1/2-inch long-side, 1/4-inch back-side.
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Unread 12-14-2015, 09:21 PM   #14
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Quote:
Originally Posted by Sean
"Sean, let's keep all questions related to this project on this thread so that the history is in on place, and questions and answers aren't duplicated."[/b][/b]
Will do...thanks..
Sean, if you'll visit our FAQ you'll find a very brief tutorial on how to post and attribute quotes here on the forums. Very simple once you see it.
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Unread 12-14-2015, 10:56 PM   #15
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Ok, just to clarify, between the back side of the tile and the front side of the flange, there is a 1/2" gap on the long side of the tub? That would mean that the cement board sits almost in front of the flange. Is that correct?

Are we talking about a 1" or 1 1/2" height of the flange?
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