Why Does It Matter Which Type of Spring Your Door Has?
Most homeowners could not tell you which type of springs their garage door uses without going to look. That is understandable — springs are functional hardware rather than a visible design feature — but it has practical consequences. Torsion springs and extension springs have different expected lifespans, different maintenance needs, different failure modes, and different safety profiles. Knowing which type you have helps you understand what to inspect, what to expect, and when to plan for replacement.
In Simcoe County and York Region, where extreme temperature swings and road salt exposure accelerate the wear of both spring types, understanding these differences is particularly relevant. A homeowner with 1980s extension springs on an older Newmarket or Richmond Hill home is in a very different maintenance situation than one with a modern torsion spring installation on a 2005 Barrie build.
One of the first things I do on any service call is look at the spring type. It tells me a lot about the door’s age, its history, and what to expect in terms of maintenance needs. Extension springs on an older home say one thing. A modern torsion setup says another. The spring type is the starting point for understanding the whole system.
Ilan Kuchuk, Founder, Spring Tech Garage Doors
What Are Torsion Springs and How Do They Work?
Torsion springs are the dominant spring type in modern residential garage door installations. They are located horizontally above the garage door opening, mounted on a metal shaft that runs across the full width of the opening. Depending on the door’s size and weight, there may be one spring on single-car or lighter double-car doors, or two springs on heavier or larger doors.
When the garage door closes, the torsion spring winds up, storing mechanical energy in the twisted coil. When the door opens, the spring unwinds and releases that energy through the cable drums at each end of the shaft, pulling the cables that lift the door. The twisting force is distributed along the length of the spring and through the shaft, which is a mechanically efficient way to manage the stress of repeated cycles.
Standard torsion springs are rated for approximately 10,000 cycles — around 7 to 10 years of average residential use — while high-cycle springs are available rated for 25,000, 50,000, or higher cycle counts. Torsion springs also tend to fail more gradually than extension springs, often showing warning signs before failing completely. The Door and Access Systems Manufacturers Association notes that proper sizing and installation are the key factors in maximizing spring longevity.
What Are Extension Springs and How Do They Work?
Extension springs are the older of the two technologies and are more commonly found on homes built before the mid-1990s. They run along the horizontal tracks on either side of the garage door — you can identify them as long, coiled springs parallel to the ceiling on each side. Rather than twisting to store energy, extension springs stretch when the door closes and contract when the door opens.
The constant stretching and contracting that extension springs undergo with every cycle creates a different stress profile than the twisting of a torsion spring. The force concentrates at the attachment points — the hooks at each end of the spring — and these points are where extension springs most commonly show wear or fail. Extension springs typically rate for 5,000 to 10,000 cycles and tend to have a somewhat shorter practical lifespan than torsion springs.
Extension springs require a safety cable running through the center of each spring. If an extension spring breaks, the released tension can send the spring flying across the garage with considerable force — the safety cable prevents this by containing the spring. If your extension springs do not have safety cables, this is a safety issue that should be addressed immediately. A professional spring inspection will check for and install missing safety cables.
Extension springs without safety cables are a genuine safety hazard. A spring under tension that breaks without a cable through it can travel fast enough to do real damage. On older Simcoe County and York Region homes where the springs have been in place for decades, this is worth checking. It is a quick assessment and it is important.
Ilan Kuchuk, Founder, Spring Tech Garage Doors
How Do You Know Which Type Your Door Has?
The identification is straightforward. Stand inside your garage and look up at the area above the garage door opening. If you see a single coiled spring or two springs side by side running horizontally directly above the door on a metal shaft, those are torsion springs. If you see springs running parallel to the ceiling along the horizontal tracks on each side of the door — one spring per side — those are extension springs.
Which Type Should You Choose When Replacing Springs?
If your door currently has extension springs and you are replacing them, it is worth discussing with your technician whether the door is compatible with a torsion spring conversion. Not all door configurations can accommodate torsion springs — headroom requirements may not allow for the horizontal shaft — but many can, and the conversion is worth considering for the longevity and safety advantages torsion springs offer.
The case for torsion springs in Simcoe County and York Region is particularly strong. Torsion springs distribute mechanical stress more evenly, last longer, fail more gradually, and are generally considered the safer option. In a climate that puts consistent thermal stress on metal components, the more robust mechanical design of a torsion spring system earns its modest cost premium. When replacing torsion springs, the choice between standard 10,000-cycle and high-cycle 25,000-cycle springs is also worth discussing based on how frequently the door is used.
When someone is replacing extension springs and the door can take a torsion conversion, I always recommend having the conversation about converting. It costs more upfront but the lifespan improvement is real, the safety profile is better, and the operation is smoother. Most homeowners who make the switch do not regret it. It is one of those upgrades that just makes the whole system better.
Ilan Kuchuk, Founder, Spring Tech Garage Doors
How Does Central Ontario’s Climate Affect Spring Choice?
Both spring types are affected by Central Ontario’s winters, but in slightly different ways. Torsion springs can develop surface rust on the coil that weakens the metal over time if they are not regularly lubricated. Extension springs are more vulnerable to hook deformation in cold weather, when the metal is less flexible and the concentrated stress at the attachment points is higher.
For both spring types, biannual lubrication with a cold-weather-rated product is the most important maintenance step in this climate. Annual visual inspection for rust, corrosion, deformation, or changes in how the spring sits is the second priority. Spring Tech Garage Doors performs comprehensive spring inspection and replacement as part of annual maintenance visits and on individual service calls across Simcoe County and York Region. Contact us to schedule a spring assessment or to discuss upgrading your current spring system.