I am planning a 8' x 11' shower room in my new home and have a question about the floor. The bathroom is on a first floor, with a 3/4" plywood subfloor over 3"x8"x 10' joists 1 foot on center. I plan to pour a 3" concrete slab on top of the subfloor with radiant heat tubing using a schluter product that insulates and holds the tubing in place. I plan to line the room with the kerdi waterproof membrane. I would like to use this slab as my finished shower room floor. Is this feasible? Should I apply the kerdi to the plywood subfloor and then pour the concrete over it, or would a simply poly sheet under the slab work?
Thanks for any info....
Chris
Thanks for any info....
Chris