Bathroom floor conundrum !!!

[Slime]

Hi all and thanks for your time.
My wife's very old Aunt needs her bathroom carpet replacing ......................... don't ask!
Her carers suggest vinyl, as it's easier to clean, so my wife has ordered some vinyl floor covering and some 6mm ply to fit onto the floorboards prior to gluing the vinyl onto it.
The bathroom is approximately 1.8m x 2.4m.
My questions are as follows;
1. Do I use nails or screws to secure the ply to the existing boards?
2. Do I leave a small expansion gap all around the edges, if so, how big?
3. Will I have to shave the bottom of the inward opening bathroom door?
4. Will I need any special tools?
5. How long should the whole process take?

Oh, if I've missed anything obvious, please tell me!

Thanks in advance,
Slime.

 

[Deleted member 174758]

Screws (countersunk flush) at 150mm centres leaving 10 to 12mm at the edges. You may need to buy a pilot bit/countersink tool to do this. If regular mopping is likely I'd consider adding a corner fillet (beneath the lino) around the edges, running the vinyl up the skirtings and terminating with a trim strip (as you often see in commercial washrooms).

 

[dontbelieveawordofit]

be sure to get screws that dont go too deep. most pipework , heating etc sits just under the original floorboards.