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Unread 10-18-2009, 11:23 AM   #1
EvanNH
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Question about hanging durock -- lack of studs

Hi--
I'm a new poster and I'm pitting up tiling on my shower walls.

The tile installer suggested that I do the demo and prep to save $$.

Here's the question: on the plumbed wall (29 inches) , there are only studs at the corners of the old cast-iron tub. The plumbing pokes through 3/4 inch plywood, which is nailed to the studs at the edges. The plywood is old, solid and in good shape.

The tile installer plans on hanging the durock with screws in the studs and with quickset as an adhesive. Is this OK? will it stay up?

The other walls, I'm taking down to the studs, and the installer will just screw on the durock.

Should I tell the installer to use a waterproofer like laticrete hydroban?


Also, I'd like to use 3x6 white subway tiles. What is a quality brand that is not too expensive?

Thanks!
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Unread 10-18-2009, 11:39 AM   #2
Brian in San Diego
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Evan,

Welcome to the John Bridge Forums! If you installer is just planning on sticking tile on CBU without proper waterproofing I think you should halt the project and look for a more qualifier installer. There is much more to building a shower than putting up CBU and sticking tile to it.

I don't know if by quickset you mean a rapid setting thinset or not.

t may behoove you to spend a little time in our Liberry educating yourself in proper methods of shower construction.

As to your question about subway tile...I've always believed the adage "You get what you pay for". Do quality and not too expensive go hand in hand? Dunno.

Brian
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Unread 10-18-2009, 11:41 AM   #3
tilejoe
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It is ok to use thinset to stick the cbu to the studs along with the proper fasteners---rock on screws. Remember to tape your joints and corners.
You must apply a liquid waterproofing to the cbu prior to tiling.

As far as the subway tile goes, just find something that you like. I have used great products that were expensive, and some that were inexpensive.

Good luck
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Unread 10-18-2009, 11:47 AM   #4
lou432
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Welcome Evan! This is a tub wall surround correct? Sounds like there's plywood fastened in between the studs that your plumbing/mixing valve/wet wall is on? so in essences a solid pc of 3/4 plywood?
29 inches ?? Id see if i could sneek a couple 2x`s in there to stiffen that wall up even if it was on the horizontal .
And don`t know why he`d put any thinset behind the durock on the wall lest he thought it would stiffen it up some?

Make sure he uses a poly or felt paper moisture barrier behind the durock or a roll on waterproofing on the face of the durock such as red gaurd,or hydroban to protect from moisture . And where the seems of durock are as well as the corners of the walls need a alkiline resistant mesh tape with thinset as a bonding agent.
Others will chime in I`m sure. Good Luck
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Last edited by lou432; 10-18-2009 at 03:42 PM.
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Unread 10-18-2009, 03:18 PM   #5
Edthedawg
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Yes to waterproofing. No to mastic.

Those are two good starting points

Bottom line - as noted thoroughly before - get REAL familiar w/ proper building methods AND whatever your guy plans to do BEFORE he does it.

Welcome to the forum - here's wishing you decades of happy, well-contained showering
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Unread 10-18-2009, 05:00 PM   #6
EvanNH
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thank you all.

Yes, the plywood is nailed to the face of the studs and the plumbing sticks through holes cut into it.

The problem, as I see it, is that there are no studs to screw the durock into between the 29 inch spaced plumbed wall. I'll suggest laddering some horizinal support studs in there.

Sounds good?

Thanks
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Unread 10-18-2009, 06:08 PM   #7
opiethetileman
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i learned a new word today KERDI is an investment not a waste. is this a tub surround or a shower. i would use construcyion adesive on the studs not thinset. same as they do for sheetrock
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Unread 10-18-2009, 07:11 PM   #8
Lazarus
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Evan~ Yeah, you need to put bracing between the studs. Without it, the Hardibacker will flex....BIG TIME!. Just go "overboard" and brace the crap outta the walls. You really can't do too much here....
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