Garage Door Not Closing Flush
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.
Garage door not closing flush. The door closes flush to the bottom of the floor. 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. If you need to change their tensions move them to a new hole. Garage door seal may be damaged 4.
With these removed it will close another 1 2 or so but there is still a gap. 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. There are usually two springs on each side of the garage door to swing it up.
The reasons your garage door has a gap in it could be. If your garage door is of the swing type check that everything is tight and secure on the spring plates. The top however is not flush against the frame. First check the sensor lights.
Garage door opener malfunction or door has shifted. Springs are one of the main causes of malfunctioning garage doors. First you need to see what has caused this to happen. One sends a beam of infra red light to the other.
Depending on the brand. There is about a 1 1 2 gap.