"Frank Boettcher" wrote in message
...
On Tue, 16 May 2006 16:50:45 GMT, "dadiOH"
wrote:

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.
_____________

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.


Ditto on this opinion. I finished one last year. The Hardiboard has
screws specifically made to install it. Thinset is more a leveling
agent rather than a bonding agent. No need to tape joints.

Frank

Those "special" screws are just square drive. But, they *did* do nice job.
And they didn't break, either.