Side mounted extension springs are installed above the horizontal roller tracks on both sides of the door.
One side of garage door has gap.
If the door is wood and the gap isn t severe trim the door to follow the floor.
Install a garage door threshold.
If the gap on your door exceeds this.
You will usually find that the limit adjustment is a part of the original set up procedure.
Reducing door gap in a latch side.
This will help you create a flat and level surface so the gap will close.
If there s a slight gap at the bottom of your garage door then a garage door threshold is a great option.
Set a compass to match the widest part of the garage door gap then drag the compass along the floor using its pencil end to mark a cut line along the bottom door panel or substitute a wood block and carpenter s pencil.
One other way to fix the gap at the bottom of your garage door is to increase the closing limits of your garage door opener.
The exact method depends on what type of opener motor you have.
The extension springs are evenly matched and installed to keep the garage door properly aligned so that it runs smoothly throughout the entire length of the track and closes evenly.