Mike,

We are building a handicapped accessable shower are that will require a
waterproof floor and walls.

Check out the "Schluter" drain and waterproofing system. We used it in our
house to build a 6'x6' curbless shower and were very happy with the way it
worked. A bit more expensive than the traditional vinyl liner approach, but
easier to install and it keeps moisture from getting into the mud bed. I
highly recommend it.

Visit the tiling forum at www.johnbridge.com for more information. Lots of
folks there have used this system.

Anthony