Repair a door that fell off its hinges with this Letsfixit ‘how to’ guide. If a door in your home unexpectedly fell off its hinges, it’s most likely due to wood damage on the door. Wood damage can be caused by a variety of factors, including slamming and banging or the wood rotting due to water exposure. When a door falls off its hinges, you can generally return it to the same hinges, but first you must repair the damaged area on the door, or the door will just fall off again once you reattach it.
Remove the door from the hinges completely if it is still attached in any way. To remove the door from the hinge to which it is still attached, unscrew the screw or screws still holding the hinge to the door, then place the door on a flat surface.