The short answer
Garage door springs are wound under extreme tension to lift a door that can weigh 150 to 400 pounds. When that tension releases suddenly — which happens easily if you don't know exactly what you're doing — the spring or the metal bar you're using to control it can snap back with enough force to break fingers, fracture an arm, or cause serious eye and facial injuries. This is why spring replacement is one of the few repairs pros will tell you flatly not to attempt yourself, even if you're comfortable with tools.
What actually goes wrong
Most injuries happen during two moments: unwinding the old spring, and winding the new one. Torsion springs sit on a shaft above the door, coiled tight enough to lift that door's full weight every time you open it. Homeowners get hurt when they:
- Use a screwdriver instead of proper winding bars, which slip out of the cone under load and whip back
- Lose their grip partway through winding or unwinding and let the bar spin free
- Don't secure the door in a locked-open position first, so it drops while they're working underneath it
- Stand directly in front of the spring or bar instead of to the side
- Work on the wrong type of spring repair for their door — torsion and extension springs are serviced completely differently, and mixing up the methods compounds the risk
A spring under full tension that lets go doesn't just drop — it releases stored energy almost instantly, similar to a loaded crossbow. Online tutorials rarely convey how much force is actually involved, because the person filming already knows what they're doing and still keeps their body out of the line of travel.
Why this matters more here than in a lot of places
Salt air along the coast and the humidity that sits over Brevard County most of the year speed up corrosion on spring coils, especially on homes near Cocoa Beach, Merritt Island, and Cape Canaveral. A spring that looks fine can be weaker than it appears, which means it can fail under less provocation than a homeowner expects — including during a DIY attempt. Afternoon downpours and heat also cause wood and composite panels to swell, adding extra drag on the door and extra strain on the spring system every time it opens and closes. And because storm-rated doors built to meet wind-load requirements tend to be heavier and more reinforced, their springs are under even more tension than a standard residential door. More tension means more stored energy if something goes wrong mid-repair.
What actually prevents injury
- Never remove the old spring without the correct winding bars — not pliers, not a screwdriver, not an adjustable wrench
- Lock the door in place with a C-clamp or locking pliers on the track before doing any spring work, so it can't drop unexpectedly
- Keep your body out of the spring's plane of travel at all times, including your face and hands
- Never work on a spring alone — have a second person present who can get help if something goes wrong
- Replace both springs together if you have a two-spring system, since one worn spring usually means the other isn't far behind, and mismatched tension creates its own hazard
If any of this sounds like more precision and risk than a weekend project should carry, that's the correct read. It is.
When to call Cocoa Garage Door Repair
If your spring has already broken, or you're hearing a loud bang followed by a door that won't open, stop using the door and call us. We handle Garage Door Spring Repair with the right winding tools, torque specs, and safety setup every time, and we can pair it with a full Tune-Up & Maintenance visit to check your cables, rollers, and tracks for the kind of salt-air corrosion and humidity swelling that's common throughout Cocoa, Rockledge, and the surrounding coast.
Don't risk a trip to the ER over a repair that takes us under an hour to do safely. Call Cocoa Garage Door Repair today and we'll get your door back in working order, done right the first time.