Most Roxborough Park houses went up around the early 2000s, newer than the 1980s median across our wider service area. That means less of the ancient one-piece hardware you'd find on an older street, and more torsion-spring systems paired with mid-2000s chain or belt openers - the kind that start failing on sensor alignment and worn drive gears rather than on rusted-out track. What we see most often is spring fatigue from age rather than corrosion, since these doors are two decades old at most, not five. Cold is still the wildcard. This whole region sits in a severe cold climate band, and a torsion spring that's already near the end of its cycle count will often snap on the first hard freeze rather than mid-summer. If your door groans, hesitates, or reverses right after opening on a cold morning, that's usually the spring telling you it's close to done, not the opener.