Depending on the brand.
Garage door not closing flush.
With these removed it will close another 1 2 or so but there is still a gap.
There is about a 1 1 2 gap.
The top however is not flush against the frame.
I removed the sleds and the garage door opener arm so that i could see if those were inhibiting its closing all the way.
Garage door sensors may not be aligned correctly 3.
Springs are one of the main causes of malfunctioning garage doors.
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 opener malfunction or door has shifted.
There are usually two springs on each side of the garage door to swing it up.
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.
First you need to see what has caused this to happen.
Garage floor may have cracked or shifted 2.
Garage door seal may be damaged 4.
The door closes flush to the bottom of the floor.
First check the sensor lights.
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.
Ground not flush when shutting garage door i appreciate any advice here s my problem.
One sends a beam of infra red light to the other.