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Unread 08-23-2007, 04:48 PM   #3
jadnashua
Veteran DIYer- Schluterville Graduate

STAR Senior Contributor

 
Join Date: Jul 2004
Location: Nashua, NH
Posts: 15,086
Well, cbu on the entire surface of a bathroom is overkill, it only needs to be in the shower and the floor, but won't hurt anything except the extra work and cost. Don't use mastic...use thinset, it's cheaper and works better in the long run.

Some people like to spread a thin coat of drywall mud over cbu to help it match drywall texture (i.e., smoother), but, if your entire room is done in it, it may not matter. See what others think about finishing the cbu with paint. Getting all of the screws and seams covered may end up being a pain for painting.
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Jim DeBruycker
Not a pro, multiple Schluter Workshops (Schluterville and 2013 and 2014 at Schluter Headquarters), Mapei Training 2014, Laticrete Workshop 2014, Custom Building Products Workshop 2015, and Longtime Forum Participant.
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