I just found my suspended timber floor was rotten and had to rip up the entire thing (floorboards, joists, the lot). I now have a 2' deep hole where my lounge used to be.
I plan to purchase joists and re-fit exactly what was already there, just with new wood. The one bit I dont care for is floorboards - instead of laying dozens of floorboards can I just get sheets of wood (chipboard/plywood?) and lay those down accross the joists?
The original floorboards were 22mm, could I just use 22mm chipboard?
I'll also take the opportunity to insulate.