Replacing rotten wood with something?

Question

I am redoing my bathroom floor and in some places the wood is rotten, I am wanting to replace the floor with vinyl floor tiles. Is there something I can put in place of the rotten instead of replacing the entire floor that the tiles will stick to?

Answer 1

no if the wood is bad you got to fix that too unless you want to fall thru it

Answer 2

cut it out and replaced with pressure treated wood. you may have a water leak