Most doors are open and closed at least twice a day. More than 5 to 10 years, it's thousands of times up and down. The tracks can come out of the line. The door will have dents or will be damaged. The springs supporting the door can break. The electric door opener may start to malfunction or stop working. Then you have to watch garage door repair vs replacement.
In some places, replacing the garage door may require a permit from your city or county. This is because improper installation can result in serious injury. Some places may require a professional who is licensed by the state. Check your build department in your site to be sure.
There are two main types, solid doors made of one piece and ones made of four or five sections. Both types can have insulation. Check your door to see if she has an open back exposed to the garage. If that is the case, then it is not isolated.
Another difference: have glass windows on the top of the panel or on the side of the top panel if you have a multi-section type. Both types may have vents on both sides of the lower panel near the floor. In general, the sectioned type is easier to repair. Remove the damaged section and replace it.
A problem with sectioned types and the replacement of one or more sections is to find an exact copy. If your model is out of date or is no longer in production, you may need to purchase a new device.
If your tracking is offline, you may be able to tighten the bolts holding it. If it was installed professionally, it could solve all the problems. If the track is still out of line, there may be bumps or metal bent somewhere along the track. If the track is obviously curved, it must be replaced to ensure smooth and safe operation.
The mechanism that opens and closes the door sometimes needs to be adjusted. Adjustments on the opening mechanism can be all that is needed to open and close the car's gate properly. You should consult the owner's manual. Sometimes you can download the manual from the manufacturer's website. If an adjustment does not work, the mechanism may need to be replaced. The replacement is not trivial. You may need to use a qualified professional who has the know-how and tools to install.
If the springs are worn or broken, it may completely misalign the gate. Single-panel gates have two heavy springs on each side. Sectioned gates have a spring wrapped around a bar or pipe at the top. They can be dangerous and difficult to replace. Remember to contact a professional.
Consider options for garage door repair versus replacement. For replacement, there are local companies that will set the price of the facility for purchase. Otherwise, you must evaluate what you are currently processing. If you only have one or two problems, say that a sign is refused and that the track is loose, the repair is an easy course to take. If the number of problems is exceeded, say three, as a rule, replacement is a better option. Remember that these are heavy and powered devices. Talking to a professional before deciding is a wise course.