So what do you guys use for underlayment under your tile floors? Backer board, Ditra, nothing . . .?
I am not a pro...but I have built my own tile counters, hearths, done several floors and am presently doing my own shower using Zurn drain and Mapealastic 315 etc.
I LOVE TILE!
I always use thick plywood bases (my present project has 1 1/8" ply subfloor).
I always use cement backer board on all my projects (even though many of the pros don't on counters).
I prefer "durock" better then hardiboard (easier to secure and countersink fasteners).
I like the schlueter stuff...but its so darn expensive...so I do the old fashioned cement board, sometimes I mix my own latex modified thinset (depending on project)....or I will by the bagged stuff.
I forgot...I always thinset under the backer board before screwing down per manufactuer specs, to fill any voids etc., even on my counters.
Makes a really strong good tile floor.
My wife and I laid all bathroom and pantry tile in our new log home built 4 years ago. We used backer board. It supports this tiles to prevent cracking the tiles and grout lines.