The usual call here starts with a dent, a crack, or a section that's buckled inward after an impact - a backed-up car, a dropped ladder, sometimes just decades of thermal cycling on steel that's thinner gauge than what's made today. In this region's cold-moderate winters, older steel panels that have gone through 40-plus freeze-thaw cycles show stress cracking at the seams before a newer door would. If the door still opens and closes but one panel looks wrong, that's a panel job. If the whole door is binding, dragging, or won't stay in track, the damage has likely spread past that one section, and we'll say so rather than sell a patch that won't hold. You can read more about how we handle panel replacement from our Everett shop if you want the general breakdown before booking.