Replace a garage door spring.

In the UK, most domestic garages use either extension springs (found at the sides of up-and-over doors) or torsion springs (mounted on a bar above sectional doors). When these components fail, the door becomes a deadweight that is difficult, if not impossible, to open safely without professional intervention.

What Does the Work Involve?

• Initial Inspection: A technician assesses the door’s weight, tracks, and cables to identify whether the spring has snapped or simply lost tension.
• Safety Securing: The door is physically locked or clamped in place to prevent it from crashing down during the repair process.
• Tension Release: Any remaining tension in the broken or secondary spring is safely wound down using specialist winding bars or clamps.
• Spring Replacement: The old springs are removed, and new ones—matched specifically to the door's weight and height—are installed.
• Balancing and Calibration: The technician applies the correct number of "turns" to the spring and tests the door’s balance to ensure it stays in place when half-open.
• Lubrication and Testing: Moving parts are greased, and the automatic opener (if present) is recalibrated to ensure the safety reversal system works correctly.

Typical Costs

The cost of a garage door spring repair in the UK is largely determined by the type of door system you have. Torsion springs, which are under higher tension and require more labour to calibrate, are generally more expensive than simple side-mounted extension springs.

Pro Tip: Always replace springs in pairs. If one has snapped due to metal fatigue, the other is likely days or weeks away from failing too, and replacing both at once saves you a second call-out fee.

How Long Does It Take?

• Standard Extension Spring: 45 to 60 minutes for a straightforward up-and-over door.
• Single Torsion Spring: 1 to 1.5 hours, including the time required to safely wind and balance the door.
• Twin Torsion Springs: 1.5 to 2.5 hours, as both must be perfectly synchronised for the door to run level.
• Complex Repairs: Up to 4 hours if the cables have tangled or the tracks have been damaged by the spring snapping.

DIY or Professional?

Garage door spring repair is one of the few home maintenance tasks where professional help is essential. Torsion springs are under enough tension to cause life-changing injuries or even fatalities if they release unexpectedly during a DIY attempt.

While extension springs are slightly less volatile, they still require specific tensioning tools and knowledge of door geometry. Furthermore, an incorrectly balanced door can burn out your expensive automatic motor within months. For UK homeowners, hiring a specialist ensures the door meets safety standards and protects your warranty.

Choosing the Right Tradesperson

• Check Memberships: Look for installers registered with the Door & Hardware Federation (DHF) or the Institute of Garage Door Specialists (IGDS).
• Verify Insurance: Ensure they carry Public Liability Insurance specifically for garage door repairs, as standard handymen may not be covered for high-tension spring work.
• Ask about Stock: Does the tradie carry "truck stock" of common UK springs (like Garador, Henderson, or Hormann), or will they need to charge for a second visit?
• Questions to Ask:
  • Do you provide a warranty on the springs themselves?
  • Will you check the safety reversal and force settings on my electric opener?
  • Is the quote inclusive of VAT and disposal of the old heavy metal springs?

UK Regulations

In the UK, garage doors are classified as "machines" under the Supply of Machinery (Safety) Regulations 2008. When a repair is carried out, the door must still comply with BS EN 13241-1.

• Safety Cables: For extension springs, UK standards recommend the installation of safety cables that run through the spring to prevent it from flying across the garage if it snaps.
• Anti-Drop Devices: Torsion systems should ideally have a "spring break device" that locks the shaft if the spring fails, preventing the door from falling.
• Documentation: For major repairs or motor replacements, you should receive a basic service report or invoice detailing the parts used and the safety checks performed.

Common Problems

• The "Loud Bang": If you hear a sound like a gunshot from the garage, it is almost certainly a torsion spring snapping under tension.
• Visible Gaps: A torsion spring will show a clear 2-inch gap between the coils once it has broken.
• Door Closing Too Fast: If your door feels incredibly heavy or crashes down the last foot of travel, the springs have likely lost their "memory" and need re-tensioning or replacement.
• Crooked Lifting: If one side of the door lifts higher than the other, one side of a dual-spring system has failed or a cable has slipped.

Frequently Asked Questions