Across Florida · Vetted local pros
What does a loud bang from the garage followed by a stuck door mean?
A straight answer first, then what you can safely check yourself and when to get a pro. Free estimates from a vetted MB pro near you.
A loud bang followed by a door that won't move almost always means a spring has broken, most often the torsion spring above the door. A snapped lift cable can cause the same thing. Either way, the door has lost the part that carries its weight, and the opener can't lift it alone.
The nuance is where the door stopped. A door that is closed and heavy usually points to a spring. A door that hangs crooked or has come off its track points to a cable or roller failure, and it may be unstable. In both cases, stop using the opener and keep people and cars clear of the door until a pro has looked at it.
Why it happens
Garage door springs store a lot of tension to balance a door that can weigh well over a hundred pounds. Each spring is built for a limited number of open-and-close cycles. When it wears out, it can snap suddenly, and the sound carries through the house like a gunshot.
Florida's climate speeds this up. Coastal salt air and humidity corrode springs, cables and hardware, and a corroded spring is more likely to fail. Summer heat adds to the wear. A bang can also come from a cable snapping or a bracket letting go, which can leave the door off its track.
Once a spring breaks, the opener motor may hum, strain or only lift the door an inch or two. Running it again can damage the opener, bend the door, or pull the door out of alignment, so it is best to stop.
What you can check yourself
Look from a safe distance
With the door closed, look at the spring on the bar above it. A visible gap in the coil, or a spring that looks stretched or split, tells you what the pro will find. Don't touch it.
Look for loose cables and a crooked door
Check whether a cable is dangling or the door sits unevenly on one side. Note what you see, or take a photo, to share with the pro.
Test the wall button or remote once
If you hear the motor run but the door barely moves, that points to a spring problem. Don't keep pressing the button, because repeated tries can strain the opener.
Check the safety sensors
If the opener doesn't run at all and the sensor lights near the floor are dark or blinking, the problem may be sensor alignment instead. A bang beforehand still means the spring should be inspected.
Keep clear and keep the door as it is
Don't stand or park under the door, and don't pull the release cord or push the door by hand. A door with no spring support can drop or jam suddenly.
When to call a pro
Call a pro as soon as you suspect a broken spring or cable. Springs under tension can cause serious injuries, and replacing them is not a DIY job. The same goes for a door that is off its track, bent, or partly open and unable to close. A door that won't close is also a security problem, and ahead of a storm it leaves the largest opening in your home unprotected.
Florida has no dedicated statewide garage door contractor license, and routine repair of an existing door, such as springs, cables, rollers and openers, is generally done without a state contractor license. Installing or replacing a whole door is different. It is permitted construction in most places and usually needs a licensed contractor and a building permit. A replacement door must also meet Florida Building Code wind requirements: a Miami-Dade NOA in Miami-Dade and Broward counties (the High-Velocity Hurricane Zone), and Florida Product Approval elsewhere in the state. Confirm credentials with the Florida DBPR and the local building department. We match you with a vetted pro near you and book the visit.
Your MB pro handles the permit when the job needs one. You can look up a contractor's license at Florida DBPR.
What a pro will do
- Find the actual failureYour MB pro will inspect the springs, cables, rollers, tracks and opener to confirm what broke and whether anything else was damaged by the bang.
- Replace the spring or cableSprings are usually replaced, not patched, and the door is rebalanced afterward. Ask whether the spring is rated for your door's weight and whether it is corrosion-resistant.
- Correct an off-track door and check panelsIf the door shifted or bent, the pro can realign the tracks and replace damaged panels or rollers where needed.
- Check the opener and sensorsThe pro will test the opener, the safety sensors and the auto-reverse, and tell you if the opener needs repair or replacement.
- Give a free estimate before work startsCost depends on which parts failed, door size and weight, hardware condition, and anything found once the door is opened up. Ask for the scope in writing.
How it works
Step 1
Tell us what you need
Call or send the short form with your city and the job. Estimates are free.
Step 2
We match you with a vetted pro near you
We pick a vetted pro from our network who works in your part of Florida and book the visit.
Step 3
Your pro gives a free estimate and does the work
Your MB pro looks at the job and gives you a free estimate. You decide whether to go ahead — and we stay your point of contact.
Related questions
- Can I open the door by hand after a spring breaks?
- It is not safe to try. Without spring support the door is very heavy and can fall or jam. If you need access, a pro can release and secure the door properly.
- Is a broken garage door spring an emergency?
- It is urgent but not usually dangerous if you leave the door alone. The main concerns are injury if someone tries to force the door, and a door stuck open or closed. Ahead of a storm, tell the pro so the door can be made secure.
- Does a repair like this need a permit?
- Like-for-like repairs of springs, cables and openers usually do not. Replacing the whole door almost always does, and permitting is local, so your pro or the building department can confirm.
- Should I replace both springs if only one broke?
- Many pros suggest it on a two-spring door, because the second spring has the same wear and corrosion. Ask your pro what they see on yours.
- How do I get a pro to look at it?
- Call (954) 707-6550 or use the form on the page. We take the request, match you with a vetted pro near you, and book the visit, and the pro gives you a free estimate.
Request a free garage doors estimate
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- 1Tell us what you need.
- 2We match you with a vetted pro near you.
- 3Your pro gives a free estimate and does the work.
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