Maybe someone bumped into it recently.
Garage door has gap on one side.
If the gap along the side of your door is so large that the latch won t catch or barely catches adjusting the strike can reduce the gap to ensure proper operation.
Or it could just be that the hardware has become loose over time.
It s possible that the concrete floor of your garage has settled over time leaving a gap between it and the bottom of the door.
Move the garage door up and down until you find a place where the door stays suspended when you let go.
If that point is more than four feet or less than three feet above the ground you will need to balance the door.
Mice can squeeze through a garage door gap the size of a dime.
The door runs are housed in a garage door track one on each side of the garage door.
Gaps along the sides and top of the door let in wind rain and snow and gaps along the floor let in not just weather but also critters.
This will help you create a flat and level surface so the gap will close.
2 brace the open door.
A garage door gap of almost any size is an invitation to unwanted guests.
Repairing your garage door springs can be a dangerous job due to the weight of the door.
Unscrew the strike and slide.
If you ve had your door for a while or are in and out of it a lot it can easily end up out of alignment.