I am putting new tile in bathroom which has 1x6 planks diagonally across joists. I need to raise this floor 1 3/4" to match the toilet flange, door jambs etc.
What’s the best way?
Currently I am thinking to double up 1 1/8 ply (in strips to save on cost) with 3/4 T&G ply on top.
What’s the best way to screw all this on top the existing planks? First layer to joists second not? Both to joists? Both not?
Having all these layers worries me but i need the height.
I am putting ditra + tile on top of this stack....