Extension Spring Replacement in Houston, TX
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 Houston
Houston’s subtropical Gulf Coast climate means garage door springs face near-constant humidity for most of the year, which accelerates surface rust on unmaintained torsion and extension spring coils faster than in drier climates. Rust doesn’t just look bad on a spring — it weakens the steel from the surface inward, and a corroded spring can fail well before it reaches its rated cycle count.
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 Houston
Rust-weakened springs failing early
A corroded spring can snap well before reaching its rated cycle count, since surface rust progressively weakens the coil from the outside in.
Humidity-driven spring corrosion
Year-round humidity accelerates rust on unmaintained torsion springs and cables faster than in drier climates — regular lubrication matters more here than in many parts of the country.
No visible safety cable through the spring
A missing safety cable means a snapped extension spring has nothing to restrain it, creating a real projectile hazard — this should be corrected regardless of whether the spring has failed yet.
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.
Frequently asked questions
Do hurricanes affect garage door springs in Houston?
Occasionally — a sudden wind or pressure event during hurricane season can add enough extra stress to trigger a failure in a spring that was already near the end of its service life from humidity-related wear.
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.