Arc length on shaft.
One side of garage door higher than other.
Or it could just be that the hardware has become loose over time.
Maybe someone bumped into it recently.
The most common cause of overhead type doors being out of level is frayed cables that grow in length as they fray.
It also depends a lot on the number of years the door has been up as it could be that the door springs have become worn.
If you mean that one side of the garage door is lower than the other and that it hasn t always been this way then you do have a problem.
When the door is placed directly on the floor and it s not level it causes one side of the door hinge or latch side to be higher than one another.
The door should be parallel to the header.
The replacement garage door should be one that hangs above the front of the garage and lowers down from the outside so it doesn t affect the height of the garage.
The most simple and common is door shift.
If it was opening too quickly move it to the next lower hole.
If you have a 1 gap under the door it isn t necessarily that the door is crooked.
A crooked garage door could potentially be the sign of a much larger problem.
It may be the spring.
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.
The most likely cause is that the floor is not perfectly level.
The door runs are housed in a garage door track one on each side of the garage door.
If the concrete sags on one side you do not adjust the door to fit it.
An alternative would be a pocket garage door that slides sideways on tracks from within the garage door itself so that again the height or width are not effected.
Repair a crooked garage door with help from a garage door specialist in this fr.
When this happens you need to shift it back into position.
The easiest way to solve this problem is when installing the door space the jambs off the floor when possible.
If the door was closing too quickly move the spring to the next higher hole on the bracket.
I ripped off the old bottom seal since one side of the garage always got wet in rain or snow and i could see that the seal was deteriorated at that side so went and got a new seal removed the old one sanded it slightly then applying the new seal that one side still has 1 2 space higher than the rest of the door.
This can happen when the door has shifted to one side causing it to appear uneven.
Chord length on shaft.
Adjust the springs on both sides of the door the same way.