If your garage door in Romeoville is original to the house, here's what shows up first. Panels that were fine for 20 years start to show a slight wave or oil-can dimple under direct sun - that's the steel fatiguing, not a dent. Rollers that used to run quiet start grinding, especially nylon rollers that have gone brittle. Weatherstripping along the bottom edge cracks and pulls away from the panel, which in this climate band means more cold air and condensation reaching the garage interior in winter than the door was ever designed to let through.\n\nA door that still opens and closes but drops unevenly, or that takes noticeably more effort to lift by hand when the opener is disconnected, is telling you the springs and the door itself have reached the end of what's worth repairing piece by piece. At that point you're buying individual parts for a door that's already lost most of its insulation value and its finish - the math usually favors a new door over another round of parts.