Flooring Tile - making setting bed for bathroom

Just completed shower came out very nice, now for the bath room floor outside of shower, Im a little cornfused, there is a 11/4inch plywood floor over 16inch spaced joists after removeing lanolium and osb board, used 1/2 inch wonder board on shower with tar paper behind, would like to use 1/2 wonder board on floor this is wet install, do i use thinset under wonder board? do i need more barrier? what is the best for this bath room which will see heavy use thanks for your help Gil :)

no==I would suggest you start over by researching how to do a shower .. There are many books avalible.
1 slope mud (or pre slope)
2install pan- Behind wall cbu ect.ect.
3.topping slab(mud)

Sorry was not clear shower is done, this is the floor in the bath room around toilet and leading to shower thanks Gil

The 16"oc is good. The more ply(thickness) the better.I would rather go to 1/4" cbu and thicker ply wood when possible.The cbu needs thin set under it to fill the gap between it and the ply wood.(also screws or nails)A waterproof membrane is optionial.KIDS? WE ARE NOT TALKING THE SHOWER HERE BUT THE BATHROOM!

yes Kids, and not the shower, the plywood is the subfloor so you think i should ad more plywood then go with thin set and cbu correct, should not put thin set on subfloor to cbu?

i believe you'll find the answer to your questions at the www.johnbridge.com advice forum or in the 'liberry' there. if not, post the same question on their advice board, they'll help :)

thanks for the site tip you where right found my fix:)