Why It Happens Here
The garage door itself, before we even get to what's wrong with it: Altadena's housing stock centers on 1945, years older than most of the service area's 1959 median, and a door from that era is usually a single, unreinforced steel or wood-panel slab hung on a track that was never designed for the load a heavier modern door carries. These older sections are lighter on the door leaf but the counterbalance hardware - often extension springs riding along the horizontal track rather than a torsion shaft over the header - has to work harder over the decades as wood swells, hinges wear, and rollers seize. That combination of an old door on old hardware is why springs here tend to fail on stretch and fatigue rather than a clean torsion snap. Add a moderate heat climate band that puts real thermal cycling on steel year over year, and you get springs that go soft and sag long before they visibly break - the door gets heavy to lift by hand well before the failure everyone notices. Altadena households skew toward higher income for the area, over $129,000 median, and a fair number of these owners are maintaining original hardware on a house that's 80 years old rather than having replaced it - which is exactly the group most likely to be running on the original springs.
Parts We Carry
For a house built around 1945 we're usually looking at extension springs, not torsion - mounted in pairs above the horizontal tracks, hooked to a pulley-and-cable safety system if one was ever added, and often not, since that retrofit wasn't required when these doors went in. We stock common extension spring lengths and wire gauges that fit this era's lighter single doors, plus the safety cables that should be running through them if the originals never had one - that's a cheap add-on we bring up unprompted, because an extension spring under tension with no containment cable is a real hazard if it ever lets go. We also carry standard torsion springs for houses in the area that have already been upgraded to newer door systems, since not every Altadena garage matches the year the house was built. What we don't carry on the truck: springs sized for oversized modern double doors or high-cycle commercial-grade coils - that's a special-order part, and if your door's been upgraded to something wider than the original opening, expect us to order rather than swap on the spot.
