Housing across this service area was mostly built between 1951 and 2004, with the heaviest concentration going up during the 1960s and 70s across the 27 named areas we cover. Garage doors from that build era were almost all uninsulated steel, hung on hardware that was never meant to last past 20 or 30 years of daily cycling. The climate here sits in a cold-moderate band, which means winter freeze-thaw cycling and humid summers both get a turn at the same door. That combination is rough on steel seams - moisture gets into the seam during a thaw, then the metal flexes again on the next cold snap, and over a few decades that's how you get the rust line at the bottom panel that shows up on so many of these original doors. Newer construction toward the later end of that 1951 to 2004 range tends to use lighter aluminum-trimmed panels, which skip the rust problem but dent and warp more easily under the same temperature swings. Either way, the housing age here means a lot of original panels are well past the point where a ding is just cosmetic.