For more information on garage door weatherstripping follow this link.
How to tighten up garage door seal.
It keeps the garage door pressed up against the outside rubber seal so cold air is not blowing through the gap.
Adjustable door sweep for garage doors with uneven floors.
There is also a seal along the bottom of the garage door that is usually made of rubber or plastic and subject to weatherization as well.
This takes 5 mins to do and costs nothing.
So you can see that there are several adjustments on a garage door that involve the track.
The flexible material compresses when the door closes sealing the gap along the floor to keep out water dirt cold breezes and critters.
If necessary add additional nails or staples as needed.
Measure the length of the door and cut the seal to the needed length.
When there are gaps air will leak in around the door.
Step 2 tighten the screws on the hinges using a screwdriver.
A door sweep is a strip of flexible material at the bottom of an overhead garage door that makes contact with the floor to seal out wind.
Paint weatherstripping if desired for a finished.
Start at the top hinge which tends to bear the heaviest load of the three.
The garage door bottom seal or door sweep is a long strip of rubber or vinyl that attaches to the bottom edge of the garage door.
Inspect the overhead seal periodically to ensure a tight fit against garage door and trim.
If this is the case use wood shims or some other flat object to prop up the bottom of the door as you work to resolve the problem.
First close the door and see how the door lines up with the weatherstripping on the outside.
Adjusting a garage door to the weatherstripping will involve the garage door track.
Now is a good time to replace it.
Attach the seal to the bottom of the door with tacks starting at one end and working to the other.
Adjusting garage door track did not turn out to be that tough.
Tighten the bolts up and you re done.
Garage door bottom seal for wood doors.