Why Do Garage Door Springs Break?
A broken garage door spring can seem sudden, but in most cases the spring has been weakening over thousands of opening and closing cycles before it finally fails.
The most common reason garage door springs break is metal fatigue from normal use. Every time the garage door opens and closes, the spring is put through another cycle of loading and unloading. Eventually, the steel can reach the end of its service life.
However, age isn’t the only reason a spring can fail. Corrosion, incorrect spring sizing, an improperly balanced door, worn garage door components and environmental conditions can all affect spring life.
Understanding why garage door springs break can help you identify problems with the door system and choose the correct replacement when a spring reaches the end of its life.
1. Normal Cycle Fatigue
The most common cause of garage door spring failure is simply normal use.
Garage door spring life is measured in cycles.
One cycle equals:
Door opens → Door closes = 1 cycle
Each cycle puts the spring through mechanical stress. A torsion spring winds and unwinds, while an extension spring stretches and contracts.
Over thousands of cycles, repeated stress gradually fatigues the steel.
Eventually, the spring can no longer withstand the load and breaks.
How Many Cycles Does a Garage Door Spring Last?
The answer depends on the spring.
Springs can be manufactured for different cycle-life ratings, and higher-cycle springs are available for applications where the garage door operates frequently.
A door that opens four times per day will accumulate approximately 1,460 cycles per year. A busy household or commercial garage door may accumulate cycles much faster.
That’s why years alone aren’t a reliable way to measure spring life. How frequently the door operates matters enormously.
2. Corrosion and Environmental Exposure
Corrosion can shorten the life of a garage door spring.
When moisture and contaminants attack the surface of the steel, corrosion can create small imperfections that weaken the material. At the same time, friction between the coils during operation can contribute to surface wear.
Environmental conditions can therefore have a significant effect on spring longevity.
Garage doors located in coastal or humid environments may experience greater exposure to moisture and corrosive conditions than doors in dry climates.
This makes corrosion resistance particularly important in areas where garage door hardware is regularly exposed to humidity or salt air.
3. The Wrong Spring Was Installed
Garage door springs must be correctly matched to the weight and configuration of the door.
A spring that physically fits on the torsion shaft isn’t necessarily the correct spring.
Important torsion spring specifications include:
- Wire diameter
- Inside diameter
- Spring length
- Wind direction
- Spring capacity and cycle rating
Using an incorrectly sized spring can result in a garage door that is improperly balanced.
If the spring is required to operate outside its intended range, its performance and service life can be affected.
4. An Improperly Balanced Garage Door
The springs are part of a complete counterbalance system.
When properly configured, that system offsets most of the weight of the garage door so that the door can move smoothly and with relatively little effort.
Problems elsewhere in the system can interfere with proper operation.
Worn rollers, damaged cables, binding tracks, damaged drums or other mechanical problems can change the way forces are distributed throughout the door system.
A door that doesn’t move freely can place additional stress on the springs, opener and related hardware.
A Garage Door Opener Shouldn’t Be Doing the Heavy Lifting
The opener is designed to control the movement of a properly balanced garage door.
It should not have to overcome the full weight of the door.
If a garage door suddenly feels extremely heavy or the opener begins struggling to move it, the spring system and other components should be inspected.
5. Frequent Garage Door Use
Two identical springs installed on identical garage doors can have very different lifespans simply because one door operates much more frequently.
Consider two households.
One garage door opens and closes twice per day.
Another opens and closes eight times per day.
The second system accumulates spring cycles approximately four times faster.
High-use applications can include:
- Homes where the garage is the primary entrance
- Multi-vehicle households
- Commercial garage doors
- Service facilities
- Warehouses
- Delivery and loading areas
For frequently operated doors, a higher-cycle spring may provide significantly longer service life.
6. Wear in Other Garage Door Components
A garage door operates as a system.
Springs work together with:
- Lift cables
- Cable drums
- Bearings
- Rollers
- Hinges
- Tracks
- Bottom brackets
- The torsion shaft
When these components become worn, damaged or misaligned, the garage door may no longer move as smoothly as intended.
Replacing a broken spring is therefore also a good opportunity to inspect the condition of the related hardware.
A new spring cannot correct a door that is binding because of damaged tracks, worn rollers or another mechanical problem.
7. Improper Installation or Adjustment
Correct spring installation requires more than simply placing the spring on the torsion shaft.
The spring must be properly sized, correctly oriented and adjusted for the particular garage door.
Incorrect spring selection or adjustment can result in a door that is too heavy, rises on its own, doesn’t remain balanced or operates unevenly.
These conditions can affect the entire garage door system and may contribute to premature component wear.
Can Cold Weather Cause a Garage Door Spring to Break?
Garage door springs sometimes appear to break more frequently during cold weather, leading many homeowners to assume that temperature alone caused the failure.
Cold temperatures can affect the properties of metal, but a spring that breaks during a cold period has often already experienced years and thousands of operating cycles.
Temperature changes may contribute to the conditions surrounding the final failure, but normal fatigue, corrosion, spring condition and accumulated cycles are generally more important factors.
In other words, the cold morning may be when an already-weakened spring finally breaks—not necessarily the sole reason it failed.
Can You Prevent a Garage Door Spring From Breaking?
No garage door spring lasts forever.
Springs are wear components designed to perform a finite number of operating cycles.
However, maintaining the overall garage door system can help ensure the springs operate under the conditions they were designed for.
This includes periodically checking:
- Door balance
- Cables
- Rollers
- Bearings
- Tracks
- Drums
- Hinges
- Other moving hardware
Unusual noises, uneven movement or a door that suddenly becomes difficult to operate can indicate a problem worth investigating before additional components are damaged.
What Are the Signs of a Broken Torsion Spring?
A broken torsion spring is often easy to identify visually.
Common symptoms include:
- A visible gap in the spring coils
- A garage door that won’t open
- The opener lifts the door only a few inches
- The garage door suddenly feels extremely heavy
- A loud bang was heard from the garage
- The door operates unevenly
- Lift cables appear loose after the spring fails
When a torsion spring breaks, it can no longer provide the force necessary to properly counterbalance the garage door.
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Should You Replace Both Garage Door Springs When One Breaks?
This one needs a careful answer.
On a two-spring system, both springs have typically experienced approximately the same number of operating cycles.
If both springs were installed at the same time and one has failed from normal fatigue, the second spring may also be approaching the end of its service life.
For that reason, replacing both springs is often considered when one spring fails on an older matched pair.
However, the correct decision depends on the age, condition, specifications and history of the individual springs and garage door system.
How Do I Find the Correct Replacement Spring?
A replacement torsion spring should be identified by its specifications—not simply by looking for a spring that appears similar.
To identify an existing torsion spring, you’ll generally need to determine:
- Wire diameter
- Inside diameter
- Spring length
- Wind direction
Small differences in these measurements can significantly change the operating characteristics of the spring.
G.A.S. Hardware has created a complete illustrated guide explaining how to obtain each measurement correctly.
Garage Door Spring Safety
Garage door springs can store a significant amount of mechanical energy.
Improper removal, adjustment or installation can cause springs or related hardware to move suddenly and with considerable force.
Anyone working on a garage door spring system should understand the system, use appropriate tools and follow appropriate safety procedures.
Homeowners who aren’t comfortable working with high-tension garage door components should contact a qualified garage door professional.
Frequently Asked Questions About Broken Garage Door Springs
What is the most common reason a garage door spring breaks?
Normal metal fatigue from repeated opening and closing cycles is the most common cause. Garage door springs are wear components and eventually reach the end of their service life.
How long should a garage door spring last?
Spring life depends more accurately on operating cycles than years. The spring’s design, cycle rating, frequency of door use, environment and condition of the garage door system all affect service life.
Why did my garage door spring make a loud bang?
When a torsion spring breaks, stored energy is released rapidly. The resulting movement of the spring can produce a loud bang that may be heard throughout the house.
Can I still use my garage door if the spring is broken?
Operating a garage door with a broken spring can place excessive strain on the opener and other components. A broken spring should be addressed before normal operation resumes.
Why does my garage door keep breaking springs?
Repeated premature spring failures can indicate incorrect spring sizing, improper adjustment, door-balance problems, binding components or another mechanical issue with the garage door system.
Do garage door springs need maintenance?
The complete garage door system should be periodically inspected for proper operation and worn or damaged components. The spring manufacturer’s recommendations should be followed for any spring-specific maintenance.
Shop Replacement Garage Door Springs
G.A.S. Hardware supplies professional-grade garage door springs and replacement hardware for residential and commercial garage door systems.
Whether you’re replacing a broken spring or stocking your service vehicles, correctly identifying the spring and using quality components are essential to proper garage door operation.