I have three doors in a relatively new home (5 yrs) that will no longer close properly due to settling. They get stuck anywhere from 1-2" before they close.
I've been told two ways to fix them, and I dont know which one is best, or easiest. Keep in mind that my finished wood products, when repairing, have not turned out too well.
The first way I was told, was to mark the top of the door where it is catching, remove it from the hinges, and sand/plane the top down, so that it would fit in the doorway.
The other option I was given, by another person, was to take a short 2x4 and place it under the door frame (where the door catches), and smack it a few times with a hammer. Evidently this would move the molding up, and allow the door to close. I have doubts about this process, though, because (A) it sounds like the end result would be uneven molding, and (B) I would end up having to do paiting and caulking to try to fill in the gaps.