This tip has to do with doors that stick to the door frames when being opened and closed. More often than not it’s the top corner of the door that starts rubbing on the door jamb in the closed position. Homes of course do settle and move over time. Sometimes this leads to a door frame opening becoming out of square. If that’s the case you may want to get a qualified home repair contractor to take a look at it and possibly make some more in depth adjustments to how the door and jamb are hung in the opening. However, there are a couple quick things you might be able to check before calling in a pro or just planing/sanding the edge of the door to keep it from rubbing. Removing material from the edge of the door not only creates the need for refinishing/painting but may not keep the problem from continuing with time. Particularly since a sagging door will also lead to the door strike and plunger no longer lining up to the point the door is no longer securely latched when closed.
I often see solid doors that have started rubbing against the frame in the closed position. And often this can be due to how they were installed, including doors that were upgraded from an original hollow core door to a more stylish panel door that weigh considerably more. This extra weight pulls more on the hinge side of the door jamb than a lighter door and over time could actually pull the jamb a bit loose from the shims and rough door framing. The doors are typically hung with finish nails that may not have enough holding power for the long haul.
One of the first things I check when inspecting a sticky door is the top and middle hinges. These typically have just short screws holding the hinges to the door jamb itself. By removing the hinge screws closest to center of the jamb, and installing a longer screw that will go through the door jamb and into the rough framing in the wall itself, you can often pull the whole door frame back into position eliminating the rubbing. This usually requires about a 2 1/2″ screw. Of course also check all hinge screws to insure they are still tight in the edge of the door and framing as loose hinge screws can also create a little extra “slop” in the door position causing rubbing. Loose/stripped hinge screws can usually be repaired with either slightly larger screws or inserting shaved wood and glue into the screw hole and reinstalling the original screw back into place.