Springs Carry the Door, Not the Motor
Springs do the lifting. Most standard sets are good for around ten thousand lifts and lowerings, and when one gives up, the door suddenly weighs what it really weighs, often well over a hundred pounds. That is why a motor that hums while the door stays put so often traces back to a broken spring.
Replacement is a matter of measurement: wire size, coil length, diameter and winding turns all have to suit the door. If you have added insulation or a heavier panel, the numbers change. Springs sized to the actual weight also let the door rest evenly on its bottom seal.
What a Failing Spring Looks Like
A gap in the coil
On a torsion door, look above the opening for a visible break in the wound bar. A loud bang from the garage often announces it.
A door that feels heavy
Release it from the opener and lift. If it drags down like dead weight, or one side lags, the springs have stopped sharing the load evenly.
Slow, jerky or lopsided travel
Tiring springs leave the opener struggling, and the door may rise unevenly or settle crooked against its seals.
How the Replacement Goes
- 1
Measure before choosing
We measure the existing springs and weigh up the door as it stands now, with any insulation kit, windows or extra reinforcement included.
- 2
Replace the pair together
The pair has done identical duty, so a fresh spring beside a worn one leaves the door lopsided. We usually swap both.
- 3
Wind and set the tension
Springs are wound with proper bars to the right turns, then fine tuned until the door holds still about halfway up.
- 4
Check the finish
We confirm the door closes squarely onto its bottom seal and that the opener's travel and reversing still behave.
Spring Questions
- How do torsion and extension springs compare?
- Torsion springs wind on a bar above the opening and twist to lift the door. Extension springs stretch alongside the horizontal tracks, secured by safety cables. Torsion sets deliver smoother lift, while extension sets are common on older, lighter doors.
- Why should I leave spring work to a technician?
- A spring under tension stores enough force to hurt someone if the tool slips, and an incorrect size leaves the door badly out of balance. Measuring, equipment and technique matter, so this is no place to improvise.
- Do added insulation kits change what spring I need?
- Yes. Foam boards or vinyl-faced batting add weight, sometimes a noticeable amount, and a spring set chosen for the bare door may no longer balance it. Installing an insulation kit is the moment to recheck spring tension, so the door still floats near the middle of its travel and the opener does not strain.
Broken Spring or a Heavy Door?
Describe the bang, the gap you see or how heavy the door feels, and you will hear what the springs likely need.
Get your springs sorted — (239) 388-7750