plastering over cement board in bath

can someone tell me if cement board can be plastered. This is the area next to a tub that is chronicically wet and the green board crumbles and the plaster falls off.
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Replies
I think the problem might be the green board, not the plaster. That stuff isn't supposed to get wet in the first place.
DRC
exactly but itss a tough spot to keep dry especially in rental property. i've heard backer board can be used w/ durabond plaster. Then theres the issue of keeping the water out
OK, I get it now. Scroll down a few topics, we've got a lively discussion going about that question even now.
The short answer so far seems to be "I don't know for sure, but I don't see why not."
For a more useful answer -- how about tile? We know that works.
DRC
I've tuned in to that discussion , talk about confusing. I'm not a plasterer so I dont understand some of the tech terms. I believe someone suggested the USG site . Thats a good start. Its about 18 in up from the floor thats the problem. I'm probably not the only one w/this problem. any other suggestions????????????
FWIW, I have done the Durabond over Wonderboard detail in a bathroom under a window by the shower where all sorts of water and temperature issues spelled death to drywall. That was in 1989 at my mother's home, and it still works fine fifteen years later.
Bugle
Okay Gramps, seems like you're putting the cart before the horse. You're issue isn't about plaster and CBU compatability, it is about how to address a problem with moisture in the bathroom.
So, explain the whole problem and offer your ideas of how to address it. Then we can respond in kind, taking everything you have offered into account. The solution in one case may not be appropriate for your case.
You write about difficulties with GB getting wet. Well, why is it getting wet? This must be addressed prior to deciding what type of finish to be applied to a wall.
So, what's the rest of the story?
F.
The answer is yes.