Ok, just been reading this thread again as Im now up to the stage where I need to order the floor.
Here is where I am at.
I have:
9mm batons on the floor. (Silent coat between batons so not contributing to height)
5mm
underfloor insulation
2mm Altro flooring
With 12mm ply floor total height = 28mm
With 9mm ply floor total height = 25mm.
So I struggling with which ply floor and which steps will work best. Anyone shed some insight please.