in our master bathroom the subfloor (plywood) has been secured to the joists..its solid and im ready to start tiling.. I have Hardibacker underlayment ready to go.. some thinset and some ambition:laughing:
just to put my ducks in a row...
plywood, layer of thinset, hardibacker, screw hardibacker to subfloor, skim joints with tape and thinset...let dry.. thinset, tile, grout, enjoy!
and for the walls in the shower area.. vapor barrier, green board, thinset, hardibacker screwed to studs, thinset, tile, grout, enjoy!
( leave a 1/8 of an inch around the tub to allow for silicone caulking)
feel free to comment!
Floors---the mesh is usually applied as you tile--if you put it on first and let it dry,you could end up with high spots from the dried thinset.
Walls----The 1/2" backer board is applied directly to the studs---
NO green board behind it----never ever.