Mark L. wrote:
Greetings All,
I plan on using Hardiboard as a backer for bathroom tile and it will
sit on 3/4 plywood. What is used to bond the Hardiboard to the ply?

Nails and/or screws. Not a bad idea to bed it into thinset to fill any low
spots.
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Also, the Hardiboard doesn't have tapered edges like Durock does, is
it ok to tape and mud the joints where the Hardiboard meets?

Personally, I wouldn't bother...the thinset used to bed the tiles will fill
any gap.

--

dadiOH
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