I stupidly let someone lay a new bathroom and kitchen floor in a rental double-wide. Original floor was terrible, old broken tile, etc. So he laid
1/4" plywood on the old floor and new square thin vinyl self-adhesive tiles on that. Looked fine and wore well for a few weeks. Until a kitchen sink drain let loose and dumped a bunch of water on it. Plywood warped and needs repairing.What can I paint this floor with to waterproof it so water won't go between the tiles and soak the plywood? Haven't found anything yet with Google. I suppose floor wax might work but I'm afraid it will wear off all too soon unless frequently reapplied.
Ideas?
TIA.