I'm installing a vinyl floor in my bathroom (replacing carpet). There is currently no underlay, so my plan is to screw down 3mm plywood sheets directly onto the boards, I can then use adhesive spray to smoothly fix the vinyl on to these sheets.
Should I leave any kind of gap to allow for expansion? Is this the best method to achieve a level vinyl floor? My biggest concern is the gap between floor and wall (tiled), and how to stop any sort of curling or spaces opening up (essentially basic waterproofing)
Advice really appreciated on this!