Extension to Torsion Spring Conversion: When Older Canadian Garages Should Upgrade, Costs & What to Expect

Want this fixed rather than explained? We do garage door spring repair and replacement in London, with the prices published up front.

The Upgrade Most Older London Garages Are Quietly Waiting For

If your home was built before the early 2000s and still has its original garage door, there is a good chance it is running on extension springs. They are the long coils stretched along the horizontal tracks running back from the door header into the garage. They have probably worked, day in and day out, for two decades. They are also one of the most failure-prone parts of the entire door, and on many older Canadian homes the safer, smoother, longer-lasting alternative, a torsion spring system, was never really priced out for the owner.

Converting from extension to torsion springs is one of the most common questions we field on service calls in London. The math on the upgrade has shifted in homeowners' favour over the last decade. Torsion hardware costs have come down, the labour to install it is well understood, and modern openers expect the smoother lifting action that torsion systems provide. This article walks through why the conversion matters, what it actually costs in 2026, the headroom and structural requirements that decide whether it is even possible in your garage, and what a proper conversion includes from the first measurement to the final balance check.

If you are still deciding whether the difference between the two spring systems matters at all, start with our torsion vs. extension springs guide, which covers the mechanical basics and the warning signs of failure for each type. This article picks up where that one leaves off.

A Quick Refresher: How Each System Works

The two spring systems exist to do the same job: counterbalance the weight of the door so the opener (or your arms) only has to overcome a small fraction of the total weight when raising it. They get there in completely different ways.

Extension springs sit horizontally along each track, anchored at the front to the door header and at the rear to a wall or ceiling bracket. They stretch when the door is closed, storing energy. When the door is raised, they release that energy by pulling a cable that lifts the door. There are usually two springs (one per track) on a residential door. They are simple, mechanically inexpensive, and have been the default on lower-priced installs and older builds for decades.

Torsion springs sit horizontally on a steel shaft mounted to the wall directly above the closed door. Instead of stretching, they twist. When the door is closed, the springs are wound up tight; when the door is raised, they unwind through cable drums on each end of the shaft, applying lifting force evenly across the full width of the door. There is usually one or two springs on the shaft, depending on door weight.

Both systems are governed by the broader safety guidance published by the Door & Access Systems Manufacturers Association (DASMA). Their garage door safety tips page states plainly that aging springs are the single most important maintenance item on any door, regardless of which system you have, and that a door with extension springs requires safety cables to contain a failure.

Why the Industry Has Moved Toward Torsion

Most new residential garage doors sold in Canada today come with torsion springs as the default. That move was not a marketing choice; it was the industry's response to four real problems with extension springs that became unavoidable as openers got more powerful and doors got heavier.

1. Safety in Failure

When a torsion spring breaks, it stays on the shaft. The winding cone holds the broken pieces in place and there is rarely any projectile risk. When an extension spring breaks, the two halves fly apart with all the stored stretching energy still inside them. Without the safety cable described in our extension spring safety cable article, a broken extension spring can launch across the garage at high speed. The safety cable upgrade is essential on every extension system, but it is a containment after the failure happens. A torsion system is inherently safer at the moment of failure.

2. Smoother, More Even Lift

Extension springs pull the door up through a cable on each side, with the lift force concentrated at the bottom corners. A double-car door lifted this way can flex and twist slightly with every cycle. A torsion system applies lift force evenly across the full width through the cable drums on the shaft, with both drums turning together. The door rises straight, sits straight in its tracks, and puts less wear on rollers, hinges, and panel seams. Homeowners almost always notice the difference the first time they manually operate the door after a conversion.

3. Longer Working Life

Standard residential torsion springs are rated for around 10,000 cycles. Extended-life options at 20,000, 25,000, and even 100,000 cycles are widely available and only modestly more expensive at the time of install. Standard residential extension springs are typically rated similarly at 10,000 cycles, but their working life is more sensitive to how stretched they sit when the door is closed and how rough the cycle is. The DASMA Technical Data Sheet 190 on Factors Affecting Spring Cycle Life documents the variables that shorten spring life on both systems, but in field service it is generally the extension springs that arrive at the breaking point first.

4. Compatibility With Modern Openers

Today's belt-drive and jackshaft openers are designed around a torsion shaft. A wall-mount jackshaft opener, covered in detail in our jackshaft vs. ceiling-mount opener guide, physically requires a torsion bar to drive. If you are considering a jackshaft for a low-ceiling garage or a finished space, the conversion to torsion is the prerequisite, not an option.

Headroom: The Question That Decides Whether You Can Convert

Before anything else, a conversion depends on whether your garage has enough vertical space above the closed door to fit a torsion shaft. Garaga, a Canadian-based manufacturer, publishes the headroom reference chart used across the industry. The numbers come from the geometry of the standard 12-inch radius track and are the same regardless of which manufacturer you use.

If you plan to use the existing electric opener, add another 2 inches to the minimum, since the opener rail mounts to the centre of the header. Most attached London garages built since the 1990s have 15 inches or more of headroom and convert easily on a standard kit, opener rail included. Older homes, detached garages with low ceilings, and any garage with less than 13 inches above the door are candidates for the low-headroom variant. We measure this on every quote before recommending a conversion approach.

Going the other direction: if your garage has an unusually tall ceiling rather than a tight one, ask about a high lift conversion instead. It raises the track so the open door tucks up higher out of the way, which is often paired with a torsion upgrade since the drums change at the same time. Our high lift calculator works out the track height, extension length, drum size and cable length for your own garage.

What a Conversion Actually Includes

A spring system is not just two springs. A proper conversion replaces every part of the counterbalance assembly. The old extension hardware comes out completely; the new torsion hardware goes in with components matched to the door's measured weight. A typical residential conversion includes the following:

• Two new torsion springs, sized to the door's measured weight per the door manufacturer's specification. Standard-cycle springs are the default; extended-cycle springs (20,000 cycles or more) are usually offered as a modest upgrade at install.
• A continuous steel torsion shaft (typically 1″ diameter) that runs the full width of the door, mounted on the wall directly above the closed door.
• Two cable drums (one on each end of the shaft), matched to the door height. The drums replace the extension-system pulleys entirely.
• Two new lifting cables running from the cable drums down to new bottom brackets on each side of the door.
• Centre and end bearing plates that carry the shaft.
• A spring anchor bracket mounted at the centre of the shaft above the door, which the springs wind against.
• New bottom brackets and properly tensioned new cables at each lower corner of the door. The old extension-system bottom brackets are removed because the geometry of the cable attachment changes.
• Removal of the old extension springs, pulleys, S-hooks, safety cables, and the rear anchor brackets attached to the back wall or ceiling. The horizontal tracks are checked and re-shimmed if needed.
• A full balance test after install: with the opener disconnected, the door should hold position at roughly waist height without drifting up or down. This is the single most important check that the conversion was done correctly.

The bottom brackets in particular are not casual hardware. As covered in our bottom bracket safety article, these are the parts of the door that hold the lifting cable under tension whenever the door is closed. They are the single most dangerous components in the system and must be set up correctly during the conversion. A torsion install typically uses tamper-resistant bottom brackets that prevent a homeowner from inadvertently loosening them later, in line with DASMA's tamper-resistant bracket recommendation.

Real 2026 Canadian Costs

A torsion conversion on a standard residential door in the Canadian market generally falls into the $400 to $800 range all-in before HST, parts and labour included. The variables are the size of the door, the cycle rating of the springs you choose, whether the existing tracks and rollers are reused or replaced, and whether the headroom permits a standard or low-headroom install. The table below covers the typical 2026 ranges seen on London-area service calls. Get a written quote before any work starts; the spread between different installers can be wider than the difference between standard and upgraded parts.

For comparison, replacing extension springs only on an existing extension system typically runs $200 to $400 all in. So the incremental cost of converting to torsion at the same service call, rather than just swapping springs, is often only $200 to $400 more. The conversion is permanent; the extension swap simply resets the clock on the same system, with the same projectile-risk failure mode, for another decade.

When Conversion Makes Sense vs. When to Just Replace the Door

A conversion only pays off if the door itself has another ten to twenty years of useful life in it. If the door is rusted at the bottom panel, dented in multiple sections, or no longer matches what the homeowner wants for the house, the conversion money is better folded into a full replacement. Our garage door lifespan guide covers how to evaluate the remaining life on each component.

Conversion is usually the right call when:

• The door itself is in sound structural condition (no rot, rust-through, or section damage)
• The existing extension springs are at or near end-of-life and would need replacement anyway
• The garage has at least 13″ of headroom, or 15″ with a ceiling opener rail (a low-headroom kit works from 4¾″)
• You plan to keep the existing door for another decade or longer
• You want to upgrade to a jackshaft opener or other modern smart opener
• You are concerned about safety, particularly if children or pets are around the garage

Full door replacement is usually the right call when:

• The door panels are dented, faded, rusted, or no longer match your home's exterior
• The door has poor insulation and you would benefit from a properly insulated unit (see our R-value explained article)
• The headroom is below the low-headroom threshold without significant structural rework
• The existing door is more than 20 to 25 years old and other components (rollers, hinges, weather seals) are also at end of life
• You are renovating or selling the home and curb appeal is part of the calculation, as discussed in our curb appeal and resale value article

What Conversion Day Looks Like

A torsion conversion on a standard residential door is typically a two-hour to four-hour job for a single experienced technician. Here is what a homeowner can expect from arrival to balance test. (For broader context on what an install day looks like, our installation day article covers full-door installs in detail.)

1. Measurement and final quote (10 to 15 minutes). The technician confirms door height, width, and weight. Door weight matters: a 16-foot insulated steel double door usually weighs 180 to 280 lb, while a single-car steel door is more like 80 to 160 lb. The spring choice depends on this number.
2. Opener disconnect and door secured open (5 minutes). The opener is unplugged from the wall. The door is raised to the fully open position and clamped to the tracks below the rollers with locking pliers so it cannot move.
3. Extension hardware removal (20 to 30 minutes). With the door secured open and the springs at their slackest, the old extension springs, pulleys, S-hooks, safety cables, and rear anchor brackets are removed. The existing lifting cables are disconnected.
4. Header reinforcement check. The technician inspects the wood header above the door for cracks and ensures it can hold the spring anchor bracket. Older homes occasionally need a header reinforcement board added at this stage.
5. Torsion shaft and bearings installed (20 to 30 minutes). The centre bearing plate, end bearing plates, and steel shaft are mounted above the door. The shaft is checked for level.
6. Cable drums and new lifting cables installed (15 to 20 minutes). Drums are slid onto each end of the shaft and oriented correctly for the rotation direction. New cables run down to new bottom brackets at each corner of the door.
7. Springs mounted and wound (30 to 45 minutes). The torsion springs are slid onto the shaft, anchored at the centre to the spring anchor bracket, and wound to the manufacturer's specified number of turns using proper winding bars. This is the moment that demands trained hands.
8. Balance test (5 to 10 minutes). With the opener still disconnected, the door is unclamped and operated by hand. A correctly counterbalanced door should hold position when stopped at any height. If it drifts up or down, the spring tension is adjusted in quarter-turn increments until balance is correct.
9. Opener reconnect and operation test (10 minutes). The opener trolley is re-engaged, the manual release rope is verified, and the door is cycled three or four times to confirm smooth operation. The opener's force settings may be adjusted to suit the new lifting action.
10. Walkthrough and cleanup (5 to 10 minutes). The technician walks the homeowner through the new system, points out the manual release and the warning labels, and confirms the warranty terms.

Most homeowners are surprised at how much quieter the door is on the first cycle after a conversion. The smoother lift action is immediately obvious, particularly on double-car doors.

What the Conversion Does Not Fix

A spring conversion is not a cure-all. There are several common door problems that a conversion will not address, and it is worth being honest about them up front:

• Worn rollers will still be noisy after the conversion. Many installers include a roller upgrade in the same service call for an extra $60 to $120; on an older door this is usually worth doing. See our roller replacement guide for the warning signs.
• Damaged or bent tracks will continue to bind even with a perfectly balanced torsion system. Our track problems article covers what to look for.
• Worn weather seals still need to be replaced separately. The conversion does not touch the seals.
• Cracked or dented panels are unaffected by the spring upgrade. Section replacement is covered in our panel replacement article.
• An end-of-life opener will not get a second life from a smoother lift. If the opener is more than 15 years old or pre-dates the 1993 federal photo-eye requirement, plan to replace it separately. Our when to replace your opener article covers the warning signs.

A thoughtful service technician will tell you about all of this before the work starts, not after.

Maintenance After Conversion

One of the quiet benefits of a torsion conversion is that the maintenance routine becomes simpler. The system has fewer exposed moving parts and the parts that are exposed are easier to inspect. The DASMA Maintenance Guide covers what an annual professional inspection should include; for the monthly homeowner routine, our monthly safety test guide and springtime tune-up checklist walk through the visual checks.

Specific to a new torsion system:

• Lubricate the springs twice a year with a light spray-on garage door lubricant. A thin film of oil along the coils reduces inter-coil friction and extends the spring's life. Our lubrication guide covers what to use and what to avoid.
• Inspect the cables visually any time you do the monthly safety test. The new lifting cables should be smooth, straight, and free of fraying. Cable failures are covered in our cable failure guide.
• Listen for changes. A torsion spring nearing end of life often makes a faint pinging or snapping sound on the first cycle of the day. If you hear that, schedule an inspection.
• Repeat the balance test annually. With the opener disconnected, the door should hold position at waist height. Drift up or down by more than 5 to 10 cm means the springs are losing tension.

Frequently Asked Questions

How long does a torsion conversion last?

The torsion springs themselves are rated for around 10,000 cycles in standard configuration. For a household that opens and closes the garage door four times a day (which is typical), that works out to roughly 7 years of working life. Extended-cycle springs at 20,000 or 25,000 cycles are widely available and double or triple that life. The rest of the hardware (the shaft, drums, bearings, cables) typically lasts as long as the door itself, usually 20 to 30 years. The DASMA Technical Data Sheet 190 details the factors that affect spring cycle life.

Will my existing opener still work?

Yes, in almost all cases. The opener attaches to the top of the door section and lifts it; it does not care whether the lift is assisted by extension or torsion springs. After the conversion you may need to adjust the opener's force settings down slightly, because the smoother torsion lift means the opener has less resistance to work against. If your opener is more than 15 years old, this is a natural moment to evaluate whether it should be replaced too.

Can I keep my existing tracks?

In most cases, yes. The vertical and horizontal tracks attach to the door rollers and do not change between spring systems. The exception is the rear track hangers: with extension springs, the rear ends of the horizontal tracks anchor the springs and may have additional structural framing attached. After conversion, those anchor brackets are removed. A trained installer will verify that the tracks are straight and properly aligned before completing the install. Our track problems article covers what straight tracks look like.

Do I need to upgrade the door header for a torsion install?

The spring anchor bracket mounts to the wall directly above the closed door, in the centre. On most attached residential garages built since the mid-1980s, the existing wood header is structurally sufficient. On older homes, detached garages, or homes with metal framing, a header reinforcement board (typically a 2x6 lag-bolted into the framing) is sometimes added during the install. Your installer will assess this on the day.

What if my garage only has 10 inches of headroom?

You are in low-headroom territory. The standard lift torsion kit will not fit, but a low-headroom kit (sometimes called a dual-track or double-track system) uses smaller drums and a different cable geometry to work in headroom as low as 4¾″ according to the Garaga headroom chart. The hardware costs $80 to $150 more and the install takes slightly longer, but the conversion is still possible.

What is the difference between standard-cycle and extended-cycle springs?

Standard-cycle springs are wound from heavier-gauge wire on smaller diameters and reach their cycle limit faster but cost less. Extended-cycle springs are wound from lighter wire on larger diameters, which lets them flex more times before fatigue sets in. The trade-off is the larger physical size and slightly higher price. For a household that uses the garage door six or more times a day, the upgrade to a 25,000-cycle spring at install is usually worth the modest extra cost. For a low-use household, standard cycle is fine.

Can two springs be replaced one at a time as they break?

This is one of the most common shortcuts homeowners encounter and the answer is no. DASMA's safety guidance is clear: if a door has two springs, both should be replaced together, even if only one has broken. The reason is that springs wear together. The unbroken spring is just as fatigued as the broken one and will fail within months of its partner. Doing the work twice means two service calls and two labour charges; doing it once costs less in the long run.

Is a torsion conversion covered by my home insurance?

Generally, no. Home insurance covers sudden, accidental damage (such as a tree falling on the door), not wear-and-tear upgrades. However, if an extension spring failure damages your vehicle, your back window, or a person, your insurer may ask whether the door had a safety cable installed. Missing safety cables can be cited as a contributing factor in claims. The conversion eliminates that question by removing the extension system entirely.

How do I know if my installer is qualified for spring work?

Ask whether the company carries liability insurance and what their training process is for spring work. The International Door Association (IDEA) and DASMA both publish technician training programs that reputable installers participate in. Locally, you can also check the company's record with the Better Business Bureau profile for London-area garage door companies. A trained technician will explain the conversion in detail, measure the door weight before quoting, and provide a written warranty.

Quick Reference Checklist

• Confirm you have extension springs (long springs stretched along each horizontal track), not torsion springs (short, fat springs on a shaft above the door).
• Measure your headroom: the vertical space from the top of the closed door to the lowest ceiling obstruction. Want at least 13″ for a standard torsion kit, 15″ if a ceiling opener rail goes above it. A low-headroom kit works from 4¾″.
• Assess the door itself for remaining life: rusted bottom panels, dented sections, faded paint, or a door that no longer suits the home all argue for replacement rather than conversion.
• Get a written quote that itemises springs, drums, shaft, cables, bearings, bottom brackets, and labour. Reject any quote that lumps everything into a single number.
• Expect $400 to $800 all in for a typical residential conversion in 2026.
• Always replace both springs at the same time, even if only one has broken.
• Consider a 25,000-cycle spring upgrade at install if your household uses the door more than four times a day.
• Have new lifting cables and tamper-resistant bottom brackets installed as part of the conversion.
• Verify the installer performs a balance test (door holds at waist height with opener disconnected) before the work is signed off.
• Plan to lubricate the new springs twice a year with a light spray-on garage door lubricant.
• Treat all spring work as professional-only. Never attempt the winding step yourself.

The Bottom Line

An extension to torsion conversion is one of the few garage door upgrades where almost everyone wins. The safety improvement is real: a torsion failure stays on the shaft instead of becoming a projectile. The smoothness improvement is real: a torsion lift is quieter, straighter, and easier on every other component of the door. The lifespan improvement is real: extended-cycle springs at install can outlast the door itself. And the cost, at $400 to $800 all in, is modest compared to the alternative of replacing extension springs every decade and living with the failure-mode risk in between.

If your home was built before 2000 and you have not had the springs touched in the last decade, this is worth a closer look. The upgrade does not need to be done today, but it should be on the homeowner's mental list of medium-term safety improvements alongside replacing pre-1993 openers (which lack the federally-mandated photo eyes covered by the UL 325 standard, see the UL 325 50th anniversary retrospective) and adding safety cables to any extension system you choose to keep. If you would like us to look at your door and tell you honestly whether conversion makes sense, we offer no-obligation safety inspections across London and the surrounding area. There is no deposit, no pressure, and no upsell on work the door does not need.