Most homes in the Temecula service area went up between 1975 and 2009, with the bulk of that stock dating to the 1980s and 90s across the twenty communities we cover, from Rainbow six miles out to East Hemet at twenty. That means a lot of original builder-grade doors are still hanging, and they were never meant to last forty years.
The mild temperate climate here doesn't crack panels the way freeze-thaw regions do, but it does bake steel and wood through years of sun exposure until the finish and hardware give out. Springs lose tension slower here than in harsher climates, but the tracks and rollers on a thirty-year-old door still wear out from plain use - thousands of open-close cycles with no relief from weather extremes. When we get called out to look at a door that won't balance right anymore, it's almost never storm damage. It's just age catching up with a door that was fine for three decades and now isn't.
So installation calls here tend to split two ways: a door that's finally failed for good, or an owner upgrading insulation and look while the bones of the garage are still solid.