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Old 11-27-2009, 05:36 PM   #1
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From these Pics what do you think is the correct way for the backer board


Hi

Since I was getting behind on the Bathroom project we hired a Contractor

He told me running the Backer Board behind the tub is fine and the tiles will sit on the lip.

I looked at his work yesterday and see numbers written on the lip

That lip is the nailing edge to secure the tub to the studs I'm 100% sure and the numbers get hidden with tiles.

1,What it looks like now


2,How the tiles will sit on that lip

3,The Numbers I found


4,The Way I think the backer board should go


Cont....
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Old 11-27-2009, 05:47 PM   #2
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From these Pics what do you think is the correct way for the backer board


That looks like drywall....not cement backer board ?
Drywall should not be used
Yeah - the tiles should come down & cover those numbers
Backerboard/seal should come down past the upper edge of the tub
But should not sit on the edge of the tub
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Old 11-27-2009, 05:48 PM   #3
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From these Pics what do you think is the correct way for the backer board


5,The way I think the Backer board should sit on the lip and the tiles go



He comes back tomorrow and I want to have a talk but want to make 100% sure. I'm in the right before I say I would like you to place the backer board on the lip of the tub.(I'm no professional here)

Also I haven't figured out how he plans to secure the tub as he really doesn't want to go with the directions from the manufacture.They clearly state and show pictures of using 1" 1/2 Stanless steel screws to secure it into the studs.

3060_3260_tub_instructions_color_7-28-09.pdf

He says the tub will crack but they warranty the tub to be installed like that

I'm trying to figure out if I'm in the right here....

please do help

Last edited by K.M.G; 11-27-2009 at 05:54 PM.
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Old 11-27-2009, 06:03 PM   #4
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From these Pics what do you think is the correct way for the backer board


Quote:
Originally Posted by Scuba_Dave View Post
That looks like drywall....not cement backer board ?
Drywall should not be used
Yeah - the tiles should come down & cover those numbers
Backerboard/seal should come down past the upper edge of the tub
But should not sit on the edge of the tub
I thought that too...Was planning on buying Dens shield

We had already bought 5 sheets of Mtech2-Mold & water resistance Drywall for the room.

He then Told us we needed 3 more sheets,then I see him putting it on the wall.

I asked him if a inspector came in would he pass that to be used in the tub area for tiles..yes

So I just let it be as it was another $65 we spend and my Dens shield was $100

This is the old tub and the lip was covered with tiles

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Old 11-27-2009, 06:04 PM   #5
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From these Pics what do you think is the correct way for the backer board


Yep, definitely looks drywall. It should not go behind the tub flange. The tub should be fastened to the studs and the backerboard taken to the lip.
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Old 11-27-2009, 06:42 PM   #6
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From these Pics what do you think is the correct way for the backer board


Quote:
Originally Posted by Scuba_Dave View Post
That looks like drywall....not cement backer board ?
Drywall should not be used
Yeah - the tiles should come down & cover those numbers
Backerboard/seal should come down past the upper edge of the tub
But should not sit on the edge of the tub
From what I get your saying it goes pas the mounting lip like this right...But it would be on a angle.maybe I don't understand



Or do you mean just above the tub like this 1/4-1/8's


I was under the impression it sits right on the tubs lip edge and is flat and flush like this(NO Gap)
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Old 11-27-2009, 07:00 PM   #7
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From these Pics what do you think is the correct way for the backer board


Quote:
Originally Posted by K.M.G View Post
From what I get your saying it goes pas the mounting lip like this right...But it would be on a angle.maybe I don't understand

Or do you mean just above the tub like this 1/4-1/8's

The backer board should go down past the edge of the tub like this pic you took
It should NOT be at an angle as properly installed it will be shimmed out to be level
It should sit just up from the edge - not ON it
That way if any water does get in there it will not wick up into the board

Possibly Denshield applied over the sheetrock meets code
Where are you located?
FLA or Canada?
Your location statement is a little confusing.....
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Old 11-27-2009, 07:38 PM   #8
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From these Pics what do you think is the correct way for the backer board


This House is in Port Hope ont
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Old 11-27-2009, 08:40 PM   #9
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From these Pics what do you think is the correct way for the backer board


My plumber just installed my tub and he used some kind of cement under the tub to keep it in place and also take the bounce out of it.. Forgot the name of it. Also about the lip I just cut the back of the backerboard the thickness of the lip on the tub so it would sit flush on the wall. And leaving some space at the bottom..
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Old 11-27-2009, 09:04 PM   #10
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From these Pics what do you think is the correct way for the backer board


Is there anything holding the tub in place right now?
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Old 11-28-2009, 12:00 AM   #11
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From these Pics what do you think is the correct way for the backer board


Drywall behind the Denshield is OK, though not necessary as it will span 24". The fasteners should be rust-resistant coated or galvanized nails, 6" on center placement. The install as pictured will have a 1/4" problem if Denshield is run down over lip (as it should) within 1/4" of finish tub surface. It will angle inwards there. Someone correctly said to shim the wall before the drywall. The Denshield fasteners must penetrate the wood framing 3/4" to not void the warranty. No v.b. is required: http://www.ebuild.com/ImgRepos%5C102...g%5C102815.pdf

The tub should be fastened to the walls after setting in fresh mortar or drywall mud and leveling it. The tile should have equal width pieces on the sides when done and be within 1/8" of tub surface. Tile/tub, and tiles/tiles at inside corners should be caulked, not grouted.

I would search here: http://books.google.com/books?ei=8h0...spell&as_brr=3
Be safe, Gary
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Old 11-28-2009, 09:31 AM   #12
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From these Pics what do you think is the correct way for the backer board


I think I will just cut my loss and buy the proper stuff Dens shield, so I know it's right and not half-azz

Also I will properly install the tub too

I haven't seen or heard from him in 2 days now so I'm taking the project over again.

Thanks for the info about the tub problem
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Old 11-28-2009, 10:23 AM   #13
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From these Pics what do you think is the correct way for the backer board


Something looks weird here. Are there installation instructions with the tub. The area where the letters and numbers are looks like what should be the nailing fin, but it than it looks like the top of the flange has another 1/2 inch flange. A picture of the flange without the sheetrock installed would help.
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Old 11-28-2009, 05:53 PM   #14
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From these Pics what do you think is the correct way for the backer board


The part of the tub that has the letters should be covered with backerboard to about 1/4" from the actual top lip of the tub (the part you'll see below the numbers). The way to do it is to either make or buy furring strips (wood) and attach them to your studs right up to the top of the flashing fin. That way your backerboard overlaps the flashing fin of the tub and it doesn't have to be bent. The furring strips will go all the way to the ceiling.

You're making a good decision to use backerboard. BE SURE that you tape the seams with mesh tape and mud them with thinset.
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Old 11-28-2009, 08:22 PM   #15
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From these Pics what do you think is the correct way for the backer board


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Originally Posted by mikey48 View Post
Something looks weird here. Are there installation instructions with the tub. The area where the letters and numbers are looks like what should be the nailing fin, but it than it looks like the top of the flange has another 1/2 inch flange. A picture of the flange without the sheetrock installed would help.
I don't have many really good pictures of that


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