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Old 12-15-2019, 02:34 AM   #1
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Does bathroom wall tiles need cement board?


I'm not talking about the shower. I'm talking about if I want to tile the remainder of the bathroom walls. Does this require cement board? Or will drywall work?
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Old 12-15-2019, 02:39 AM   #2
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Re: Does bathroom wall tiles need cement board?


Regular drywall anywhere it won't come into contact with water is fine.
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Old 12-15-2019, 08:24 AM   #3
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Re: Does bathroom wall tiles need cement board?


For kitchen splash, I primed the regular drywall first, 2 coats, then thinset.
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Old 12-15-2019, 11:10 AM   #4
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Re: Does bathroom wall tiles need cement board?


Can even use the pre mix mastic if on walls.
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Old 12-26-2019, 09:57 PM   #5
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Does this mean the whole room is smaller? Because of the added thickness of the walls? Any way to prevent this?
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Old 12-26-2019, 10:34 PM   #6
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Re: Does bathroom wall tiles need cement board?


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Originally Posted by farmerjohn1324 View Post
Does this mean the whole room is smaller? Because of the added thickness of the walls? Any way to prevent this?
Is there a reason that concerns you??
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Old 12-26-2019, 11:41 PM   #7
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Originally Posted by farmerjohn1324 View Post
Does this mean the whole room is smaller? Because of the added thickness of the walls? Any way to prevent this?
Is there a reason that concerns you??
I suppose not. Except maybe issues with electrical boxes especially for lighting fixtures.
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Old 12-26-2019, 11:52 PM   #8
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Re: Does bathroom wall tiles need cement board?


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Originally Posted by farmerjohn1324 View Post
I suppose not. Except maybe issues with electrical boxes especially for lighting fixtures.
There are box extenders for that.
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Old 12-26-2019, 11:53 PM   #9
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I suppose not. Except maybe issues with electrical boxes especially for lighting fixtures.
There are box extenders for that.
Yea I know. Guess there's no reason for it to bother me.
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Old 12-27-2019, 12:39 PM   #10
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Re: Does bathroom wall tiles need cement board?


If there's some thickness differences, it can create an edge that stands proud of the other. You wouldn't want that kind of diffenrence, esp if extending the tiles. With 16" on center studs, half inch drywall is fine but if wider spacing you may want to use 5/8 drywall. You can also use 3/8 if the bays are backed with plywood or such. 3/8 is too thin without the backer for tiling.
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Old 12-27-2019, 07:48 PM   #11
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Re: Does bathroom wall tiles need cement board?


Purple board.

https://nationalgypsum.com/products/...ProductID=2413

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Old 12-28-2019, 05:36 AM   #12
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Re: Does bathroom wall tiles need cement board?


Cement board is the heaviest type of drywall used in tile wall applications and it has the most water resistivity.
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Old 12-28-2019, 11:26 AM   #13
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Re: Does bathroom wall tiles need cement board?


If you are tiling in the bath shower area there are other options to use besides drywall, green board, purple board, cement board and pre-fab tub/shower surrounds.

Check out things like DensShield which is gypsum but with fiberglass on the front and back, Durock makes an ultra-light foam tile backer board. JohnsManville makes a product GoBoard which is polyisocyanurate foam with fiberglass on the front and back faces for extra waterproofing and durability.

And of course, there is Kerdi Boards and similar boards like Wedi, Dural Durabase and others.
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Old 12-28-2019, 12:04 PM   #14
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Re: Does bathroom wall tiles need cement board?


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Cement board is the heaviest type of drywall used in tile wall applications and it has the most water resistivity.
Can you prove that.?

Especially since cement and concrete wick water up even after it's cured
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