How to free a sticking door.

To free a sticking door begin by tightening any loose hinges.

If the door still sticks, mark the area where the door sticks with a pencil.

Remove the door from its hinges and sand or plane the door at the marked area until it fits smoothly into the frame.

Seal all ends of the door with a clear wood sealer.

Rehang door.

If door only sticks in wet weather, wait for a dry period to sand and seal the edges of the door.