2026-05-20 7 min read
Garage door springs come in two main types: torsion and extension. Torsion springs sit above your door and twist to lift it. Extension springs run along the sides and stretch to provide lift. Most modern Brentwood homes use torsion springs because they're safer and last longer (7 to 9 years with proper care). A snapped spring means your door won't open, and ignoring the problem puts you and your family at serious risk.
Torsion springs are the heavy lifters of garage door systems. A steel rod runs horizontally above your door, and two springs wind tightly around it. When you press the opener button, the springs unwind and transfer energy to the door, making it feel weightless as it rises.
The magic happens because of torque. A torsion spring stores rotational energy, then releases it smoothly over time. This is why your door opens and closes evenly. If one spring breaks, the other tries to compensate, but it can't. Your door becomes lopsided, the opener strains, and you're left with a door that either won't budge or crashes down unexpectedly.
I've seen doors fall hard enough to dent cars, crush bikes, and seriously injure fingers and hands. This isn't exaggeration. Springs under extreme tension can snap without warning, and the metal whips with enough force to cause real harm.
Springs fail because of metal fatigue. Every cycle (up and down) creates tiny stress fractures. After 10,000 to 20,000 cycles, those cracks grow. A spring that's been adjusted incorrectly, overused, or neglected breaks faster.
Heat accelerates failure too. Brentwood summers push temperatures past 95 degrees. Metal expands and contracts, weakening the spring's internal structure. Rust from humidity also eats away at the steel from the inside out.
Extension springs work differently. They attach to cables that run along the sides of your door frame. When the door closes, these springs stretch. When you open it, they contract and pull the door up.
Extension springs are less common in newer Brentwood installations because they're inherently less safe. If a cable breaks, the spring can snap violently and hit nearby objects or people. They also don't distribute force as evenly as torsion springs, so they wear out faster and require more frequent adjustment.
**Need garage door springs in Brentwood today?** Call (925) 441-7799. we cover same-day service across the area.
Don't wait for a complete failure. Watch for these warning signs.
A loud bang when opening or closing usually means a spring just broke. Your door becomes heavy and won't open past a few inches, even with the opener running. You might hear creaking or squeaking as the remaining spring strains under full load. Some doors hang unevenly, sitting higher on one side than the other.
If you notice any of these, stop using your door immediately. A snapped spring puts extra pressure on your opener motor, which can fail next. That repair costs more than a spring replacement alone.
I understand the cost temptation. A new spring runs $200 to $400, plus labor. But attempting this yourself can cost you your health or your life.
Springs are under extreme tension. Even when the door is open, the springs want to contract. One slip with a wrench, one miscalculation of tension, and that spring can unwind at your hand or face. Professionals use specialized tools and techniques to safely release that tension.
We've handled countless cases where homeowners tried to save money and ended up in the emergency room. The hospital bill far exceeds what our team charges. Learn more about safe replacement practices in our garage door spring replacement guide for Brentwood homes.
A single torsion spring replacement typically costs between $200 and $400, including labor. Two springs (recommended, since the second is likely close behind) run $400 to $600. The exact cost depends on spring size, door weight, and whether your system has safety cables.
Schedule a free quote and we'll inspect your door, assess the damage, and provide a flat rate estimate. Same-day service is available for most spring repairs near you in Brentwood and the surrounding area.
Regular maintenance catches problems early. Our spring garage door maintenance checklist covers inspection points that prevent premature failure.
Lubricate springs twice a year with garage door lubricant (not WD-40). Check for visible cracks or rust. Make sure the door opens and closes smoothly without wobbling. Small adjustments now avoid expensive repairs later.
If you've experienced garage door issues before, read about our emergency garage door service options to understand your full range of support.
Call us immediately at (925) 441-7799. Don't try to force the door open. Don't use the opener repeatedly hoping it will work. Contact Garage Door Brentwood or visit our services page to book your repair.
We arrive quickly, diagnose the problem on site, and replace broken springs safely using industry-standard equipment. Most jobs finish within an hour. Our technicians carry springs in their vans, so we can often complete repairs the same day you call.
Your garage door is one of the heaviest moving parts of your home. Respect that weight, and let professionals handle the springs.
How long do garage door springs last? Torsion springs typically last 7 to 9 years with proper maintenance. Extension springs wear out faster, usually 5 to 7 years. Lifespan depends on usage frequency, climate, and lubrication habits.
Can I replace just one spring? Technically yes, but we recommend replacing both. If one spring has reached the end of its life, the other is close behind. Replacing only one creates uneven lift and stresses your opener.
Why is spring replacement so expensive? The parts themselves are affordable, but the labor reflects the danger and skill required. Technicians must safely manage extreme tension and ensure proper installation. Safety always costs more than shortcuts.
What's the difference between a snapped spring and a stretched spring? A snapped spring breaks completely and can't support your door at all. A stretched spring has lost tension and no longer provides adequate lift, making your door feel heavy and difficult to open.
How do I know if I need torsion or extension springs? Look above your door. If springs run horizontally along the center, you have torsion springs. If they run vertically along the sides near the cables, you have extension springs. Our team can confirm this during a free inspection.