70's ranch style house. Converting one of the back bedrooms to a master bathroom. Subfloor is 1x8 on diagonal. 3/4" x 2 1/4" oak is the finish floor. Is it okay in this situation to durock over the existing oak finish floor, or should we remove the oak, glue and screw 1/2" ply over the existing 1x8 and install the durock over that. Why or why not?
Regards,
Regards,