My house is from 1873 and has original soft pine flooring throughout. We are the 5th owner, only here for 2 years, and have no idea how the floor has been finished in the past.

What we do know is that the finish is wearing away in high traffic areas. At best the top layer is flaking off, at worst it is giving the kids splinters and breaking off in chunks. We do not have it in the budget this year to do the floors completely, so what I am looking for is a stop-gap solution to keep them from getting worse until we can get the floors refinished or replaced next year.

Aside from putting down randomly scattered carpet squares to protect the floor, do I have any options for spot sealing/protecting?