As your garage door moves along the track, it is guided by rollers, typically either steel or nylon, that allow the door to achieve its full range of motion. It is vital that the rollers are appropriately sized and rated for the weight of your garage door. Broken rollers can make the door sag and can even cause a door to crash if left unchecked. If you suspect or notice a broken roller, call us right away before the problem escalates into bigger, dangerous issues.