Newer garage doors can weather all sorts of issues, but if the door is made of metal, dents can become a problem. Even great-quality garage doors can get them, just as luxury cars can get door-dinged in a parking lot. If you've just replaced your garage door with one that could be dented, you need to do what you can to protect the door. New garage doors look great and help increase your home's curb appeal, but if they get a dent, that curb appeal can shrink rather quickly.