On 8/23/2005 3:26 PM US(ET), Eric and Megan Swope took fingers to keys,
and typed the following:

Thanks for the advice. I saw on the one site, instead of making a mortar
bed, the builder used 1/2 durock cement backer board to fill the gap between
the subfloor and the bottom of the shower base. He then used liquid nails
to adhere the base to the durock. Would this be acceptable as well?



The reason they use cement is that it will form to the base of the
shower. Usually, the shower base is not flat, but is dished so that the
water will run towards the drain. I don't think any backer board will
conform to the dish shape of the base.


"User Example" wrote in message
. ..


Speedy Jim wrote:


willshak wrote:
SNIP



When my shower stall and tub/shower enclosure were installed, they put a
bed of wet concrete in the spaces before setting the units in place,
thereby giving the fiberglass bases more support.



Yes! The cement bed is essential to give the base support.
It doesn't need to be concrete w/aggregate; a "sand mix"
is adequate.


They didn't put anything under our fiberglass tub and it creaks like you
wouldn't believe. Good thing I never use it and my wife doesn't weigh
much.








--
Bill