Extension Spring Replacement in Lynnfield, MA
Extension springs run above the horizontal tracks on either side of the door and stretch — rather than twist — to store lifting energy. They’re common on older garage doors and lighter-duty installations.
Local context for Lynnfield
Sustained sub-freezing stretches around Lynnfield are a real, well-documented driver of winter broken-spring service calls.
Extension spring systems use a spring mounted above each horizontal track that stretches as the door closes and contracts to help lift the door as it opens, working through a pulley-and-cable system that redirects the force downward to the door itself. This design was the standard for decades before torsion systems became more common, and it’s still found on many older homes and some lighter residential doors today.
Because an extension spring stores energy by stretching rather than twisting on a fixed shaft, a snapped extension spring can become a projectile if it isn’t restrained — which is exactly why safety cables (a thin cable that runs through the center of the spring, anchored at both ends) are considered essential on any extension-spring door. A door with extension springs but no visible safety cables is a real hazard and worth flagging to a technician even before a spring actually fails.
Extension Spring Replacement problems we see in Lynnfield
Cold-weather spring breakage
Cold temperatures make torsion and extension springs more brittle, a leading real-world cause of sudden spring failure in colder climates.
Balance drift from freeze-thaw cycling
Repeated freeze-thaw cycles can gradually affect door balance and spring tension, a common reason for a balance/tension adjustment in winter climates.
Uneven lift, heavier on one side
When only one of two extension springs fails or weakens, the door often lifts unevenly or binds against the track on that side.
Door drops suddenly or closes too fast
A snapped or badly weakened extension spring can no longer control the door’s descent, causing it to fall faster than normal.
Frequently asked questions
Should garage door springs be inspected before winter in Lynnfield?
A pre-winter inspection can catch early spring wear before sustained cold in and around Lynnfield turns a minor issue into a fully broken spring and a stuck door.
How much does extension spring replacement typically cost?
Extension springs themselves are generally less expensive than torsion springs, but total job cost depends on whether pulleys, cables, or safety cables also need replacing. A local technician can give an accurate quote after inspecting the full system.
Are extension springs less safe than torsion springs?
Extension springs aren’t inherently unsafe, but they do carry a specific risk if safety cables are missing: a snapped extension spring under tension can become a projectile. With properly installed safety cables, extension systems are a well-established, functional design that’s simply less common on newer doors than torsion systems.