Designing Kitchens and Bathrooms - CBU OK for front of shower curb?

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markdiy
04-18-09, 11:33 AM
I'm tiling a new shower pan. Is OK to us concrete backerboard on the front of shower curb? I'll deck mud the top and inside.

Thanks // MarkDiy

HotinOKC
04-18-09, 02:32 PM
Where is your pan liner? Why do you want CBU in the front? Just mud the whole thing.
markdiy
04-19-09, 09:40 AM
The liner is vinyl. I wrapped the curb in wire mesh. I was mudding all sides, but it wasn't sticking to well to the outside. I ended up mudding the side inside the shower and about an inch on top. For the front, I used CBU -- I only placed a few screws about an inch up from the floor.

HotinOKC
04-19-09, 12:05 PM
Ok. I'm guessing you didn't add any lime to your mud when doing the curb and that's why it might not have been sticking.
markdiy
04-19-09, 06:38 PM
Yep -- didn't add lime. Guess that's the secret!
HeresJohnny
04-20-09, 02:37 PM
You can use bagged masons mortar mix for this, no need to add anything. What did you use?:)