Extension springs run along the horizontal tracks and stretch as the door opens. When one breaks, we recommend replacing both — uneven spring tension causes cable failures and door misalignment.
Extension springs are common in older Vancouver homes and low-headroom garages. They work by stretching under load, which makes them more prone to fatigue over time.
Extension springs stretch on both sides of the door as it closes, storing energy to help lift it back up.
Most homes built before the mid-1990s in Vancouver use extension spring systems.
Extension springs suit garages with low ceiling clearance where a torsion bar can't fit.
Every extension spring must have a safety cable threaded through it to contain a break.
We replace extension springs in pairs and add safety cables — always, no exceptions.
One broken spring means the other is close behind — we replace both for reliability.
Safety cables threaded through both springs prevent dangerous whipping on a break.
We can convert your system to torsion springs for quieter, longer-lasting operation.
Door tested for balanced lift at full open, halfway, and closed positions.
Our vans carry extension springs for all door sizes. We replace both sides and test before leaving.
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