They can be very expensive and tricky to install. After making the investment and going through the process, installing a isn’t a project most people want to redo any time soon. That is why it is important to choose a material that will last a long time. Steel lasts a long time, but it doesn’t always look good. Garage doors often get bumped and scratched; that is just the nature of a Roll up Garage Door. You may try to pull a dent out of your steel one, but it never completely disappears. After time, it becomes so bent that it doesn’t run on the track smoothly and it puts strain on your opener mechanism, not to mention they becomes an eye soar.