2026-04-12 7 min read
If you've ever heard a sudden loud bang from your garage and walked out to find the door won't budge, there's a good chance a spring just gave out. It's one of the most common garage door failures we see in Brant Rock — and in nearby towns like Scituate and Duxbury, where the same coastal climate conditions are at work.
Spring failure doesn't discriminate by house age or style. Whether you're in a classic Cape Cod bungalow steps from Brant Rock Beach or a newer Colonial off Ocean Street, your springs are under the same mechanical stress every single time that door cycles open and closed.
Your garage door — depending on whether it's a single or double — weighs anywhere from 130 to over 300 pounds. Springs are what make that weight manageable. They store mechanical energy when the door closes and release it to help lift the door when you open it. Without working springs, the opener motor is fighting dead weight. Most of the time, it just stops mid-cycle.
There are two types you'll encounter:
- Torsion springs — mounted horizontally above the door opening, coiled around a metal rod. More common in modern installs, longer-lasting, and considered safer when they fail. - Extension springs — run alongside the horizontal tracks on either side of the door. Less expensive upfront but shorter lifespan and a wider failure zone.
Most springs are rated for somewhere between 10,000 and 20,000 cycles — with one cycle equaling one open and one close. For a family using the garage as the main entry point, that lifespan can go surprisingly fast.
But in Brant Rock, there's a second problem layered on top of normal wear: moisture. The coastal air along the South Shore carries salt and humidity year-round. Garage door springs can rust when exposed to moisture, making it a particular concern for homeowners in coastal regions, and rust doesn't just look bad — it degrades the spring's structure from the inside out, causing it to break well before its rated cycle count.
We've already covered what salt air does to your entire garage door system in detail — but springs are among the most vulnerable components because they flex and compress constantly, opening up micro-cracks where moisture gets in.
The freeze-thaw cycle we deal with every winter makes it worse. Cold temperatures increase metal brittleness, and a spring that's already been weakened by surface rust is much more likely to snap on a cold January morning than at any other time of year. If you want to understand the full picture of winter stress on your system, our guide to South Shore winter garage door failures is worth a read.
Don't wait for the loud bang. Here are the warning signs that something is wrong before a full break:
- The door feels unusually heavy when you lift it manually — springs may be losing tension - Uneven movement — the door jerks or tilts to one side when opening or closing - Visible gaps in the coils — healthy torsion spring coils should be touching; gaps mean the spring is near failure - The door won't stay open when stopped partway — springs aren't counterbalancing properly - Loud popping or squeaking during operation — metal under stress or in need of lubrication - The opener runs but the door barely moves — the motor is working; the spring isn't
If you spot a gap in the coil or your door feels dramatically heavier than it used to, stop using the motorized opener. Forcing a broken spring through cycles damages the opener motor and can cause cables to snap.
Here's the honest breakdown for 2026:
- Torsion spring replacement: $150–$350 per spring, including parts and labor - Extension spring replacement: $100–$200 per spring - Replacing both springs at once (recommended): $300–$500 total for most single-car doors
It's almost always smarter to replace both springs at the same time, even if only one has broken. Springs on the same door age at the same rate. If one broke today, the other likely has a few months left at best — and a second service call means paying the trip fee twice.
High-cycle springs (rated for 25,000–50,000 cycles) cost modestly more upfront but can last two to three times as long. For a coastal home in Brant Rock where the extra moisture exposure already shortens spring life, upgrading to high-cycle springs when you replace is often worth the difference.
Garage door springs are under extreme tension — enough to cause serious injury if they release suddenly. Torsion springs in particular require specialized winding bars and precise technique to install safely. This isn't like swapping a light fixture. Even experienced DIYers have been hurt badly by a spring that let go unexpectedly.
Leave it to a qualified technician. The job typically takes 30 to 60 minutes when done by someone who does it every day, and the repair cost is far lower than an ER visit or a damaged door panel from an improperly tensioned spring.
There are a few things Brant Rock homeowners can do to extend spring life:
1. Lubricate springs 2–3 times per year using a lithium-based or silicone garage door lubricant — not WD-40, which evaporates quickly and leaves residue. Coastal homeowners should do this more frequently than inland residents. 2. Test your door balance twice a year: disconnect the opener, lift the door manually to waist height, and let go. If it stays put, balance is good. If it falls or flies up, call for an adjustment. 3. Schedule a professional tune-up once a year. A technician will catch worn cables, bearings going bad, and early-stage rust before any of it becomes an emergency.
For a broader seasonal maintenance checklist, check out our full services overview to see what a professional tune-up includes.
Q: Can I still use my garage door if a spring is broken? A: Technically the opener may still run, but you shouldn't. Operating a door with a broken spring puts severe strain on the opener motor and cables, and the door can fall unexpectedly. Disconnect the opener and leave the door closed until the spring is replaced.
Q: How long does spring replacement take? A: For a standard single or double-car door with torsion springs, most professional replacements are completed in 30 to 60 minutes. If cables need to be replaced at the same time, add another 15–30 minutes.
Q: How do I know if I have torsion or extension springs? A: Stand inside your garage and look at the door system. Torsion springs are mounted horizontally above the door opening on a metal rod. Extension springs run along the horizontal tracks on either side. If you're unsure, contact us and we can help identify what you have before any work begins.