We recently purchased a house that has reclaimed wood floors that are in pretty bad shape. The floors were installed 12 years ago and are pretty worn from furniture, kids, animals etc. There is water damage to some boards which has caused them to warp and pull up, and a lot of gouges, splits, splinters and holes in them. In some cases, the splinters have left large gaps in the boards. The boards themselves are only about 1/4" thick and glued like laminate to the subfloor, which doesn't seem normal, but it's what is there.

The original flooring contractor is no longer in business and my husband would like to replace the floors, but I love the old, rustic look and would prefer not to spend the money to replace them.

Is it possible to refinish these? Should I nail down/glue the warped boards, sand the old finish/scratches with an orbital and then fill the bigger gouges/gaps with famowood? Or should I use an epoxy filler? I'm not sure I can replace the splintered boards very easily - I've never seen real wood flooring milled that thin and have no idea how I could find something that would fit without planing it myself - so if it's possible to save the badly splintered boards I would like to try.

Any suggestions would be appreciated!

General state of the floors - worn and scratched.

Not even sure what this black stuff is but it appears to be part of the board - were these boards burned before they were installed? Is that just part of the reclaimed charm?

Examples of gouging,scrapes.

Some holes were filled by the previous owner at some point.

These boards are water damaged and pulling up, you can see how thin they are.

This is a badly splinted board, a whole piece of the wood is missing in the middle and you can see the subfloor underneath.