Sections of the floor in our dining room have worn sections, where the polyurethane coating has worn through to the bare wood. Having the room emptied and properly refinished isn't really an option at the moment. I understand that you really can't stay in the house while the pros are using their giant floor sanders and spraying polyurethane, and that it takes several days.
Can I sand the section of floor by hand and paint or spray polyurethane on the damaged sections? Is there any way of doing this so it'll last for more than a few months? Or are we best off simply waiting the several months or so it'll be until we can have this done properly?
The research I've done has yielded several opinions on the subject. This one, for example, seems to outline a procedure I could do on my own, but can I do this to just a section of the floor?