Torsion and extension springs support garage doors in different ways. Identifying the system helps guide service, but it is only one part of choosing a replacement. Door weight, hardware arrangement and the applicable instructions matter too.
Two different arrangements
Torsion systems commonly use a shaft above the opening. Extension systems typically use springs that stretch alongside the horizontal tracks. Some doors use less obvious or enclosed arrangements. A photograph taken from a safe position can help describe the installation; there is no reason to remove a cover or touch a spring before booking.
Why appearance is not a specification
A replacement spring cannot be selected just because its color or size resembles the old component. The installed door and its hardware have to be considered as an assembly. Adding insulation or changing sections can also affect the system. Discuss any earlier alterations during the assessment.
Leave the loaded parts alone
Springs and connected lifting hardware can hold dangerous tension. Do not loosen brackets, detach cables or attempt to unwind a spring. If the door is stuck or heavy, leave it out of use and keep people clear. Jack’s spring service page explains what to discuss when requesting professional replacement.
Frequently Asked Questions
How can I describe my spring system without touching it?
Torsion springs are typically on a shaft above the opening; extension springs are typically beside the horizontal tracks. Describe only what you can see safely.
Is converting spring systems the same job as replacing a spring?
No. A conversion changes the counterbalance arrangement and requires a separate fit and supporting-hardware assessment.