A door will warp at the edges or in the middle. to determine how to fix it, you need to find out where the warp is. if the door doesn't open or close properly, you can assume the door has swollen against the floor, part of the frame or the ceiling.. When the door(s) are swollen take a permanent marker and mark the areas where the door is swollen. make sure that if the door is modified it will still hit the stops which keep it from opening all the way in.. Wood preservatives: 'why has my shed door swollen so much?' jeff howell advises a reader who has applied a wood preservative to seal his shed door to prevent moisture movement..
How to fix a shrinking or swelling exterior door depending on the type of door you have (usually wood) the steps will vary for fixing and repairing your exterior door. assuming your door is made from wood, the best plan of action is to remove the door from the hinges and sand it down to bare wood.. My door keeps swelling up why? is the door leave swelling or the door frame? if its the hinges, try tighten them, if the screws are too loose, you have to fix them in a different position. if its the door leave that is swelling, scrape it to fix.. Door swelling is a problem affecting untreated wooden doors during humid conditions which can cause them to absorb moisture, swell and become stuck fast. usually a bit of force will open a swollen door although it may cause some damage to the door frame, however once a swollen door is open it will be almost impossible to close again..