This area sits in a mild temperate band, so we're not chasing the freeze-thaw cracking or the flash-flood water damage that wrecks doors in other climates. What gets doors here isn't weather, it's age and cycle count. A door installed around 1980, running two or three times a day for over forty years, wears out the way anything mechanical does: the spring loses tension gradually until one day it lets go, usually on a cold morning when the metal is stiffest. Rollers on the original steel track glaze over and start binding. Openers from that period, if they've never been swapped, are chain-drive units with worn sprockets and gear kits that were never designed to last five decades. We see less rust damage here than you'd get near the coast, which is one small mercy of the local climate, but it doesn't offset the fact that most of what fails is original hardware finally giving out.