On Sat, 14 Dec 2013 14:05:57 -0600, "Snag" wrote:

http://www.youtube.com/watch?v=mG5GIqcYkSs#t=24

Interesting stuff , but not applicable in my case . I'm on a suspended
wood floor , and will be using a two-part shower drain flange with a vinyl
pan . Floor will be 4:1 sand/cement dampened enough to pack and bond then
tiled . Walls will be concrete backer board on the bottom 3 feet , green
board sheetrock above .

Um, The Redgaurd will still all those materials from water. YMMV.