If you have carpet, that can be patched so you could patch the subfloor without removing more carpet. With wood floor, you generally have to remove more than what you need to patch before you start laying new pieces. … The first step is to put some “dead wood” underneath the hole so you have a way to secure the patch.

What can I use as a subfloor patch?

Ready-to-use, latex-based product used to fill cracks, fastener or knot holes and level low areas in plywood sub floors or concrete surfaces. The floor patch and leveler will remain flexible allowing the plywood sub floor to flex without cracking the filled-in areas.

Can you use wood filler on subfloor?

You can simply use a putty type of wood filler. Or anything to prevent the laminate from dipping. I’ve seen guys use construction adhesive like PL to repair small defects in the subfloor.