I have plywood subfloor, do I need to put down a vapor barrier first?
That is in this sequence:
1 subfloor
2 vapor barrier on top of subfloor
3 thinset on top of vapor barrier (or on top of plywood if vapor barrio is not required)
4 backer board
5 thinset on top of backer board
6 granite tile
Do I do #2 for the vapor barrier above or not?
Thanks