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Are garage door springs dangerous? Yes - they are one of the most hazardous components on any garage door, and treating them casually is how Perth homeowners end up in an emergency department. The springs above or beside your door are wound or stretched under enormous tension to counterbalance a panel that can weigh 80 kg or more. That stored energy is what lets the door glide up with one hand - and it is exactly what makes a spring capable of causing serious injury when it fails or is mishandled.
Why are garage door springs dangerous?
Why are garage door springs dangerous comes down to stored mechanical energy. A torsion spring sits on a shaft above the door and is wound tight - often seven or more full turns - to hold the door's weight. An extension spring runs along the horizontal tracks and stretches under load. Either way, the spring is holding back the equivalent of an adult's body weight, ready to release in a fraction of a second if something gives way.
- Torsion springs are wound under several turns of tension and can release that energy almost instantly if a winding bar slips or the spring breaks.
- Extension springs stretch under load and can fly across the garage if a cable or end fitting fails, taking metal hardware with them.
- A counterbalanced door is heavy - once the spring no longer supports it, the full weight of the panel can drop without warning.
- Springs work alongside cables, drums, brackets and bolts that are also under tension, so a single failure often sets off others.
How do garage door springs cause injury?
Most cases of garage door spring injury share a common thread: someone tried to adjust, wind, or replace a spring without the correct tools or training. The danger is not only the spring itself - it is the whole chain of tensioned parts around it letting go at once.
- Releasing tension by hand or with the wrong tool, so the spring unwinds violently.
- A winding bar slipping out of the cone while winding a torsion spring - the bar becomes a heavy projectile.
- Using makeshift tools like screwdrivers instead of proper winding bars, which can kick back or shatter.
- A worn extension spring snapping mid-operation and whipping across the garage when no safety cable is fitted.
- Fingers or hands caught between the door's sections or near the cable drums as the counterbalance gives out.
So how dangerous are garage door springs in practice? The realistic outcomes range from deep lacerations and broken fingers to eye injuries, head trauma and crush injuries - the kind of harm that means a hospital visit, not just a band-aid. The risk is real enough that springs should be treated with the same respect as any other component holding back tonnes of force.
Never release or adjust a spring under tension yourself
A wound torsion spring or a stretched extension spring holds enough energy to break bones and cause permanent injury. Never loosen set screws, unwind a torsion spring, or remove cables and brackets while the system is under load. If your spring is broken or you suspect it is failing, leave the door closed and call a qualified technician.
What should you do if a spring snaps?
If you hear a loud bang from the garage - often described as sounding like a gunshot - there is a good chance a spring has broken. Staying safe in the moments afterwards is straightforward.
- Stop using the door. Do not try to force it open or closed, by hand or with the opener.
- If the door is already closed, leave it closed - a broken spring means the opener or you would be taking the door's full weight.
- Disconnect the automatic opener using the emergency release cord so the motor does not strain trying to lift the door.
- Keep children, pets and cars away from the door until it has been repaired.
- Call a professional garage door technician for an inspection and spring replacement - ideally one offering same-day or emergency service if the door is stuck.
Why is spring replacement a professional job?
Garage door spring replacement safety comes down to the right tools, the right springs and the right technique. A technician does not simply swap a part - they control the tension at every step and check the components that wear out alongside the spring, so the door is safe and balanced once the work is done.
What a professional brings to a spring job
- Proper winding bars sized to your torsion springs, not screwdrivers or offcuts
- The correct spring rating matched to your door's weight and cycle life
- Safe tensioning technique that keeps hands and body out of the firing line
- Inspection of the cables, drums, bearings and brackets that often fail alongside springs
- A balance and safety test once the new spring is fitted
We get called out to plenty of half-finished DIY spring jobs. The springs hold the whole door - get it wrong and the door, the tools or the cables can let go in an instant. It is genuinely not worth the risk.
How much does professional spring replacement cost in Perth?
Professional spring replacement in Perth is far cheaper than a hospital visit. As a rough guide, replacing a single torsion spring typically runs from around $200 to $400, while replacing a pair - which is recommended, since the second spring is usually not far behind - often falls between $300 and $550. Extension springs are usually a little less. Final pricing depends on a few factors.
- Spring type and size - heavier double doors need higher-rated springs.
- Whether one or both springs are replaced, as replacing in pairs is standard practice.
- Cycle rating - higher-cycle springs cost more up front but last longer.
- Whether cables, drums or bearings also need replacing.
- Call-out timing - after-hours or emergency jobs may carry a premium.
Treat these as guide ranges only. A technician will confirm pricing after seeing your door, the spring type and the condition of the surrounding hardware.
Keeping your garage door springs safe
The safest approach to garage door springs is simple: do not touch them, and have them inspected before they fail. Watch for early warning signs - a door that feels heavier than usual, opens unevenly, or shows a gap in the spring coil - and book a service rather than waiting for the bang. If your spring has snapped, your door will not open, or you have heard a worrying noise, the team at Capital Garage Doors can inspect and replace springs safely across Perth. Call us for a quote or an emergency call-out and we will get your door working safely again.