DIY Doctor UK DIY Forums

We're just about to redo our whole bathroom, we've bought tiles for the floor but some of the floor boards are rotten, so instead of replacing the floor boards we were wondering if there was a better wooden flooring to tile on, we've asked advice from different people, some have said we want 18 ml chip board and others have said we'd be better with exterior ply, Which is best??

thanks in advance for any help

I would suggest Marine Ply as this will be easier to fit and will last longer in a bathroom environment.
Regards
TT