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shorteared 08-16-2012 07:07 PM

How to finish a drywall/cement board joint

My shower ceiling is drywall (mildew resistant kind) and the walls are all cement board.

How do I finish the joint from wall to ceiling? Do i use a drywall joint mud or do I use thin set? OR do i use both, thinset on cement board and drywall mud on drywall?

I need help...!?

papason 08-21-2012 11:49 AM

I noticed nobody answered you so I will give you what I can. I am not an expert at all but have been doin much looking and asking for my project.

The cement board gets mortar and fiberglass tape, that is for sure. Where it meets the ceiling/sheetrock I guess you could go either way. I'm thinking it will matter by how you are wanting it to look. are you trimming the corner?

How are you finishing the wall, are you tileing all the way to the ceiling?

Good luck.

shorteared 08-22-2012 05:35 PM

Hi there, I decided to post this same message in the construction thread. I got replies right away. I guess I posted in the wrong forum.

The best answer so far is to leave this joint as is because I will be tiling right up to the ceiling then finishing with acrylic caulk...

Thanks for the reply

bjbatlanta 08-29-2012 03:08 PM

Sorry, (I haven't been on the sight for a while) but that would have been my first question. Tile to the ceiling?? Correct, not taping/finishing needed. Caulk it!

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