Garage Door Spring Replacement in Larkspur: What You Need to Know Before Your Door Fails
2026-04-17 7 min read
If you've ever heard a loud bang from your garage. like a gunshot. and suddenly found your door frozen in place, there's a very good chance you just experienced a broken garage door spring. It's one of the most common service calls we handle here in Larkspur, and it almost always comes as a complete surprise to homeowners. Here's what you should know before it happens to you.
Why Larkspur Homes Are Especially Vulnerable
Larkspur sits in a coastal pocket of Marin County where morning fog, bay air, and seasonal rains create persistently damp conditions. That moisture matters more than most people realize when it comes to garage door hardware. The coastal air in Marin County can cause springs to rust and snap prematurely, making your garage door unsafe to operate. This isn't a minor inconvenience. a rusted or weakened spring can fail suddenly, often at the worst possible moment.
The problem is compounded by the age and variety of homes in Larkspur. Whether you live in a midcentury modern in Creekside, a Craftsman cottage near downtown Magnolia Avenue, or a California ranch-style home up in Greenbrae, chances are your garage door has seen a decade or more of use. Older springs mean springs closer to the end of their rated lifespan.
How Long Do Garage Door Springs Actually Last?
Garage door springs are rated by cycles. one cycle equals the door going up and down once. Standard torsion springs are typically rated for around 10,000 cycles, while higher-end springs can last 20,000 cycles or more. If you use your garage door four times a day, a 10,000-cycle spring lasts roughly seven years. Factor in Larkspur's coastal humidity accelerating corrosion, and you might see failure closer to the five-year mark on standard springs.
There are two main types to know about:
- Torsion springs. mounted horizontally above the door opening. These are the most common type on modern doors and are considered safer when they break because they stay contained along the torsion bar. - Extension springs. run alongside the door tracks. They're less expensive but can snap with significant force and pose a safety risk if not contained by a safety cable.
For Larkspur homeowners with older doors, especially those in the historic downtown neighborhoods, it's worth asking a technician which type you have and whether an upgrade makes sense.
Warning Signs Your Springs Are Failing
Don't wait for the loud bang. Here are the signs to watch for:
- The door is heavy or won't stay open. Springs counterbalance the door's weight. If the door feels unusually heavy or drops when you try to hold it up manually, the springs are losing tension. - Visible gap in the coils. A broken torsion spring will have a clear separation or gap in the coil. look above the door when it's closed. - The door moves unevenly or crooked. If one spring in a two-spring system fails, the door will often rise or fall at an angle rather than straight. - Loose or slack cables. When a spring breaks, it often causes the lift cables to go slack and hang loosely. a visible sign something has gone wrong. - Screeching or grinding on the way up. Springs under stress make noise before they snap.
If you notice any of these, stop operating the door. A failing spring puts excess strain on your opener motor and can cause cable damage or the door to come off its tracks entirely.
What Does Spring Replacement Cost in Larkspur?
For Marin County homeowners, the cost to replace garage door springs typically ranges from $140 to $390 depending on the spring type, door size, and whether both springs need replacing. Most professionals strongly recommend replacing both springs at the same time. since both were installed together, when one fails, the other is usually close behind. Replacing just one and then calling again in a few months costs more in the long run.
For complete torsion spring and hardware systems, you can expect to pay between $200 and $400. If your older door still has extension springs, converting to a torsion system runs $400 to $800 but improves both safety and long-term performance. often a smart move for Larkspur homes where coastal air is constantly working against metal hardware.
DIY vs. Calling a Pro. Be Honest With Yourself
This is one repair where the honest answer is: call a professional. Garage door springs are loaded with enormous tension, and replacing them incorrectly can cause severe injury. This isn't a question of skill level. it's a question of having the right tools and training. Performing DIY spring repair without proper knowledge and tools may lead to serious injury, particularly when using springs from unauthorized online sources that may not be correctly sized.
At Garage Door Company Larkspur, we carry properly rated springs and have the equipment to set tension correctly the first time. You can review our full repair and replacement services to understand what's included in a typical service call.
What to Do Right Now If Your Spring Broke
1. Don't use the door. A garage door without functioning springs is effectively a dead weight. potentially hundreds of pounds. with no counterforce. Don't try to force it open. 2. Use the emergency release cord (usually a red cord hanging from the opener) to disconnect the door from the motor if you need to access your car. But only lift it manually if you have help. and only partway, enough to get a car out. 3. Call for service. Same-day spring replacement is standard for most professional garage door companies serving the Larkspur and Corte Madera area.
For additional guidance on keeping all your garage door hardware in good shape between service calls, our post on essential garage door maintenance tips covers lubrication schedules and inspection routines that can help you catch spring wear before it becomes a failure.
If you're unsure whether your springs are the root problem or if something else is going on, reach out to us directly. a quick diagnostic call can save you time and prevent a more expensive repair down the road.
Frequently Asked Questions
Can I still open my garage door if a spring breaks?
Technically yes, using the manual emergency release cord. but it's not recommended unless necessary. Without the spring's counterbalance, the door is extremely heavy and can fall unexpectedly. Have the spring replaced before resuming normal use.
Should I replace both springs even if only one broke?
Yes, in almost every case. Both springs were installed at the same time and have the same number of cycles on them. Replacing just one means the second is likely to fail within weeks or months, costing you another service call.
How do I know if I have torsion or extension springs?
Torsion springs are mounted horizontally above the door opening on a metal bar. Extension springs run parallel to the horizontal door tracks on either side of the door. If you're unsure, a quick look while the door is closed will usually tell you. or just describe what you see when you call for service.