First check the sensor lights.
Garage door not closing flush.
The cement where the garage door shuts is not level it tilts from the middle down to the sides to where there is close to an inch showing when closed more so on the left than the right.
Garage door sensors may not be aligned correctly 3.
If you need to change their tensions move them to a new hole.
Clutter or obstructions that block the sensor are the first problems to look for if your door won t close or in extreme cases open at all.
There is about a 1 1 2 gap.
If your garage door is of the swing type check that everything is tight and secure on the spring plates.
If anything interrupts this beam of light the garage door will not close and the ceiling light on the opener mechanism will flash as mentioned in the previous step.
There are usually two springs on each side of the garage door to swing it up.
One sends a beam of infra red light to the other.
I removed the sleds and the garage door opener arm so that i could see if those were inhibiting its closing all the way.
The reasons your garage door has a gap in it could be.
First you need to see what has caused this to happen.
Garage door seal may be damaged 4.
The top however is not flush against the frame.
Depending on the brand.
Ground not flush when shutting garage door i appreciate any advice here s my problem.
The door closes flush to the bottom of the floor.
Springs are one of the main causes of malfunctioning garage doors.