If this process is too much for whatever reason i would sand out the damaged areas and fill with plastic wood putty.
How to fill vent hole in hardwood floor.
Make your own filler the most reliable way to match the color of a species of wood to fill holes in a wood floor is to mix sawdust from that wood species with glue.
We show every step to repair a big hole in the subfloor.
The hard part is replacing the flooring itself.
You may need to make sure the hole is an even diameter.
Remove the metal grate covering the opening.
Filling the holes is the easy part.
Avoid pva or carpenter s glue.
Now that your rope is stained and dry use a utility knife to cut it into segments equal to the length of the gaps you want to fill.
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Don t use just any glue though or it may discolor the sawdust.
After that match it to the size of your plug cutter.
Install floor joists across the opening from underneath.
It s pretty easy when you know how we removed an old chimney and that le.
Once you ve got your plug.
Depending on the size of the hole you can screw 1x6 1x8 or even 3 4 plywood from below then build back up to the height of the rest of the floor make sure your screws aren t to long that they.
Removing damaged floor yourself will save some on cost but if not confident you could create damage more expensive to repair.
Then just fit a piece of sub floor in the opening and screw it onto the 2x4 s.
Then place a section of rope on top of the gap and use your fingers a 5 in 1 painter s tool a plastic spackling knife or a similar tool to gently press the rope into the gap.
Cut a piece of plywood the correct thickness and size to fill the opening so it s flush with the bottom of the flooring.
Use your hole saw or spade bit to size out the original hole.