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Old 01-07-2011, 09:20 PM   #1
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Bath Tiles on drywall


Im doing up a new bathroom in the basement
For the shower, im just planning on framing up an appopriate area, then tile it... floor, and walls up to the ceiling.
Are tiles with the grout sealed waterproof enough just to have the tiles stuck to regular drywall? Or will I have problems down the road with this in the shower?
Or is there another perfered backing for tiles going into a shower?

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Old 01-07-2011, 09:26 PM   #2
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Bath Tiles on drywall


Tile and grout are not water proof---You need a cement backer board and hopefully a waterproof membrane over that before the tile.

Look in the tiling section this is well covered---Also,Go to Bud Clines page,by clicking on his name--
I believe he has a blog--preparing a wall for tile

Use the search button and look for shower walls.--Mike--

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Old 01-10-2011, 02:26 PM   #3
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Amen, never tile directly on drywall except, perhaps, for a backsplash. Backerboard is still best in that situation....
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Old 01-10-2011, 02:31 PM   #4
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Bath Tiles on drywall


Quote:
Originally Posted by phantasm72 View Post
Im doing up a new bathroom in the basement
For the shower, im just planning on framing up an appopriate area, then tile it... floor, and walls up to the ceiling.
Are tiles with the grout sealed waterproof enough just to have the tiles stuck to regular drywall? Or will I have problems down the road with this in the shower?
Or is there another perfered backing for tiles going into a shower?
You need to do a whole lot of research before you take on this project! Unless of course you what to clean-up the mess that an improperly installed tile shower will cause.....ie....wood rot, mold infestation and lost money on the initial installed tile, grout, wall board etc,,,etc,,,,,etc.....
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Old 01-10-2011, 05:41 PM   #5
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Amen, never tile directly on drywall except, perhaps, for a backsplash. Backerboard is still best in that situation....
Cheers
So the cememtboard can be attached directly to the studs and needs to be taped at the joins like drywall (though with thinset mortar and special tape).
Should there be a vapour barrier behind the cementboard?
What about all these 'waterproofing' compounds out for sale now, should those go on cememt board?
Also I have one wall where the shower will be thats already there (the rest need to be framed up). Its painted drywall. Can cememtboard be attached directly to that? or should i cut out the drywall, or build the wall out by attaching more studs?
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Old 01-10-2011, 07:02 PM   #6
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Bath Tiles on drywall


What are you using for a shower base?

cut out the drywall where the shower will be--

Look up--Hydroban by latacrete--that is a fine paint on waterproofing--there are others (Redguard is one)--

If you are thinking of a custom base read this Shower Construction Info (a collection of posts) - Ceramic Tile Advice Forums - John Bridge Ceramic Tile
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Old 01-10-2011, 07:31 PM   #7
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Bath Tiles on drywall


Vapour barrier, backer board (preferably cement) then thinset tiles and grout or you can use the Schluder Kirdi system on drywall, green board or any similar backer with excellent results. In the olden days I tiled on drywall with a 6" X 8" glazed tile using mastic and a thin grout line. It has been there for thirty years.
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Old 01-10-2011, 08:09 PM   #8
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What are you using for a shower base?
Original plan is just to but a bit of grade on the basement floor, put some cementboard down, then tile.
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Old 01-10-2011, 08:49 PM   #9
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That is a bad plan--the cement board will soak up water like a sponge---


Are you thinking of a standard shower base with a curb? or a curbless handicap rolling in?

Remember this in your planning---tile--grout--and concrete are not waterproof---

The link in my last post is for building a curbed shower with a liner under the sloped concrete--

Pans can be made without a liner if a surface membrane is used on top of the concrete pan

This requires the use of a special drain set that will couple to the membrane--

Membranes can be painted on-(like Hydroban) or applied from a roll (like Schluters Kerdi)

Just tiling over concrete makes for a leaking shower--Mike--
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Old 01-11-2011, 06:18 PM   #10
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sorry, meant to say I was going to put down a waterproof felt barrier too, or something similar
So, on a concrete floor, id have the pan shaped with deck mud, then covered with a waterproof liner, then the tiles.
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Old 01-11-2011, 06:37 PM   #11
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Water proof membrane on top--Ditra or Hydroban---Do a flood test before tiling--Plug the drain and fill with water for 24 hours----

It must be able to hold water without the tile and grout--because tile and grout are not waterproof

Do a search for Schluter shower systems--Ditra showers--Plenty of posts
here--

Last edited by oh'mike; 01-11-2011 at 08:00 PM. Reason: Wrong names
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Old 01-13-2011, 11:12 AM   #12
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Are the painted on membranes as durable and reliable as the roll ons?
I was looking at my local hardware store, they have ditra and kurdi, and a paintable one called redgard, which is about half the price for the area I need of the others. Any opinions or experience with redgard?
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Old 01-13-2011, 11:36 AM   #13
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Sorry,I have never used Red Guard---I have used the Hydroban for a shower floor-----

I do think that the Ditra membrane with the Dirta drain set might be safer and easier for you.

You Tube has a bunch if installation videos--Check them out--

Most of my pans are the type with a liner under the Dry Packed bed---I hope to attend a Schluter class soon and learn that system.--Done right,the Schluter system seems like a no fail method of shower building.
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Old 01-13-2011, 05:13 PM   #14
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Bath Tiles on drywall


Im a bit confused about when to use vapour barrier behind the backerboards
Is it only used if the backerboards are not covered with a waterproof barrier, or should it be there irregardless.
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Old 01-13-2011, 07:06 PM   #15
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No vapor barrier behind board if the face is waterproofed---You don't want to make a sandwich out of the backer board.

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