Ply floor lining thickness.

[Bigsidavies]

Has anyone used 9mm ply to line their floor for a camper conversion
I’ve put down 9mm batons and dodo mat in between which works out same overall height.
mum about to cover in 6mm dodo liner before I ply line.
I’ve put down my original 9mm Floor and there doesn’t seem to be any movement.
I’m going to install a u-shaped bed/seating arrangement so there’s isn’t much floor area to be walked on.my thoughts are the 9mm will fit more easily under my Kombi style step and new rear threshold and be lighter.
Surely if it’s screwed down well on the batons it’ll be pretty sturdy.
Any thoughts

 

[JackMoly]

How did the 9mm ply floor work? I've got the same step-hight issue after installing 9mm battons and 7mm dodo insulation!

 

[Bigsidavies]

Been down for 3 years and gets plenty of use. Been absolutely fine. There is a very small amount of flex but it’s not noticeable in normal use, and we have more walkable floor area due to the u-shape layout.
If doing it again I’d still go 9mm.