Garage Door Spring Repair, Redwood City Service Area

Why This Fails Locally

Most houses across this service area went up between 1947 and 1988, with the typical build year landing around 1966. That matters for springs, because a steel torsion spring is rated for a set number of open-close cycles, not a set number of years. A door opened twice a day for close to sixty years has burned through that rating a long time ago, whether or not the spring ever looked worn.

The housing stock across the 41 named communities we cover skews heavily 1960s and 70s - tract homes built fast, with torsion hardware that was standard for the era but is no longer sold new in the same sizes. When one of these springs finally lets go, the replacement often isn't a straight swap; it's matched to a header that predates current spring specs.

Redwood City and the surrounding area sit in a mild temperate climate band, so we're not dealing with the freeze-thaw cracking that snaps springs in colder regions. Here the failure mode is almost always fatigue from age and cycle count, sometimes made worse by a spring that was undersized for a heavier door, or never lubricated in decades of ownership. Across the service area's 398,899 households, 166,417 are owner-occupied houses - the kind with an attached garage and an original door that's been doing the same job, unnoticed, since the house was built.

What It Costs

We don't have a fixed number to post here, because spring jobs aren't one job. A single-door torsion spring is a different repair than a pair of springs on a double-wide door, and the gauge of wire, the drum size, and whether the cable drums or bottom brackets also need replacing all change what the job involves. A door that's been running on a weak spring for months sometimes shows us worn cables or a bent track once the spring comes off, and that changes the scope too.

What we can tell you is how we price it: we look at the door in person, tell you what's actually worn versus what's fine, and quote before we touch anything. If a cable or roller needs attention at the same time, we'll say so rather than surprise you after the fact.

One honest limitation: we don't quote spring jobs over the phone based on a description, because two doors that sound identical over the phone can need completely different parts. If you want a real number, that means a look at the door, not a guess.

Can You Do This Yourself

A torsion spring holds a lot of stored energy - enough to break fingers or worse if the winding bars slip or the wrong size bar is used. This isn't the same risk level as replacing a roller or tightening a hinge. We'd rather tell you plainly not to attempt a spring swap yourself than have you learn why the hard way.

Where a homeowner can reasonably help themselves: noticing the symptom early. If the door feels heavier to lift by hand than it used to, or the opener strains and reverses partway up, that's worth a call before the spring snaps outright and the door comes down hard, possibly on a car or on someone standing underneath.

What you can safely check yourself is whether the door is on torsion springs (the single shaft above the door, mounted horizontally) or older side-mounted extension springs stretched along the tracks - knowing which one you have before you call saves time on the job itself, since the parts and the approach are different.

The Symptom

A broken torsion spring usually announces itself with a loud bang from the garage, often mistaken for something falling or a car backfiring outside. After that, the door feels dramatically heavier - an opener that used to lift it smoothly now grinds, strains, or stalls a few inches up and reverses.

Before the full break, there's usually a warning stage: the door starts to feel slightly heavier over a period of weeks, or it doesn't sit flush and level when closed, tilting slightly to one side because one spring is carrying more load than its pair. Some owners notice the opener running longer or hotter than usual, which is the motor compensating for a spring that's lost tension.

If you see a visible gap in the coil of the spring itself when the door is down, it's already broken, even if the door still moves - most garage door openers have enough force to drag a door up without spring assistance for a little while, right up until something else gives.

Frequently asked questions