Hurricane Doors: What Homeowners Should Know Before Buying One
The short answer
Hurricane doors are garage doors tested as a complete assembly to a stated wind load, and two numbers decide whether one qualifies for your address. To find out which numbers your county asks for, call Century Garage Door Service at 833-435-4540.
Hurricane doors are garage doors tested as a whole assembly to a wind load, and that assembly means the panels, the track, the hinges, the rollers, and the fasteners tying all of it to the wall. Two numbers decide whether a door qualifies. Design pressure covers the wind force the door can take without failing, and impact resistance covers what happens when the storm throws something at it.
Your building department decides which numbers you need. The door doesn’t.
So the useful question is which hurricane doors your jurisdiction will actually approve for the opening on your driveway.
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What hurricane doors actually are
A hurricane rated garage door is not a thicker panel. It’s a tested system, and the rating belongs to the system rather than to any single part of it.
A manufacturer submits a door with its exact track, hinge spacing, strut layout, and jamb fastening pattern to a test lab. The approval that comes back describes that one combination and nothing else, so a lighter gauge track swapped in on install day means the paperwork no longer describes what’s hanging in your opening. That’s why hurricane doors get installed by people who read the approval sheet.
The names all point at the same thing. You’ll see the product called a hurricane garage door or a hurricane resistant garage door, and both are marketing rather than engineering. Listings for hurricane impact garage doors add a missile test on top of the wind rating. That’s a second hurdle, cleared separately.
And there’s no such thing as a hurricane proof garage door. Rated means tested to a stated load, which is a promise with a number attached to it.
Why the garage door is the weak point in the wall
Stand at the curb and count the openings in the front of your house. The garage door is the biggest by a wide margin, and it’s the only one built from hinged sections that have to move. Every other opening is a fixed hole in a braced wall.
Size is the whole problem. Wind pressure works on area, so the largest opening collects the largest total load, then hands that load to track brackets and jamb fasteners.
Here’s the part homeowners rarely hear. When a garage door lets go in a storm, the damage doesn’t stay in the garage. Wind gets inside and pressurizes the building from within, pushing up on the roof sheathing while the storm is still pushing in from outside. Roofs leave houses that way. Hurricane doors exist because of that arithmetic, and it’s why wind codes treat the door as a structural piece of the wall rather than an accessory bolted onto it.
Opening width drives nearly every specification decision that follows, and our garage door sizes guide covers the common widths if you want to measure yours first.
Design pressure, the first number on hurricane doors
Every set of hurricane doors carries a pair of design pressure numbers, stated in pounds per square foot. Positive pressure is the wind shoving the door into the garage. Negative pressure is the suction trying to peel it back out into the yard, and on plenty of openings that second number is the harder one to satisfy.
Four things move the figure your address needs. The design wind speed mapped for your county leads. Exposure comes next, meaning whether you sit sheltered behind other buildings or face open water. Building height matters. So does where the opening sits, because corner zones see higher local pressure than the middle of a long wall.
None of that is something a homeowner can eyeball, and it isn’t the same two counties over. The DASMA technical data sheets on wind load design for garage doors (dasma.com) set out how these ratings get derived, and your local building department publishes the numbers your zone has to meet.
So ask for the approval rather than the adjective.
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Impact rating, the second number on hurricane doors
Impact rating asks a different question. Not whether the door holds the wind, but whether it holds after something hits it. In test terms that’s a missile fired at the door, followed by a long run of pressure cycles on the damaged panel to see whether a small breach opens into a big one.
Most jurisdictions accept two routes. Either the door itself carries an impact approval, or an approved shutter or panel covers the opening during a storm. Hurricane doors sold with the approval built in save you the second system, which matters if nobody is home when a storm turns.
Glass complicates things. A window in the door has to carry its own impact approval, and an untested decorative insert undoes the assembly’s rating whatever the steel around it can do. Daylight and a rating together get specified from the start.
A panel that dented without tearing may still be sound. One section can often be swapped instead of the whole door, which our garage door panel replacement page covers. What you don’t do is keep cycling a door that took storm damage. A roller pushed off its track by high wind is a separate repair that starts at garage door off track repair.
Reinforcement struts and post kits explained
Here’s what actually separates hurricane doors from a standard sectional.
- Struts. Horizontal braces bolted across the inside face of each section, keeping a wide panel from bowing under pressure. Rated doors carry more of them, in heavier profiles.
- End stiles and hinges. Thicker steel at the ends of every section, with hinges gauged to match, because that’s where load leaves the panel and enters the roller.
- Track and jamb fastening. Heavier track, more brackets, and a specified fastener into a jamb sound enough to hold them. A rated door on a rotten jamb is not a rated door.
- Roller count and stem engagement. More wheel held inside the track, so nothing walks out under suction.
- Center post kits. A removable post set into the middle of a wide opening ahead of a storm, cutting the span the door bridges on its own. Common where the door alone can’t reach the required figure.
Retrofit kits exist, and here’s the honest version. An approved reinforcement kit tested against your door model can bring some doors up to a rating, provided it goes on exactly as the instructions say. A length of lumber screwed across the panels the night before landfall is storm preparation, not a rating.
Know the gauge, hinge grade, roller count, and fastener spec before anybody quotes you. Our garage door hardware guide explains what those grades mean.
What a heavier door asks of the torsion springs
Hurricane doors weigh more than the doors they replace. Thicker steel, extra struts, longer fasteners, and beefier hardware all add up, and the counterbalance above the opening has to be sized for that new weight instead of the old one.
This is the step a bad install skips. Hang a heavier door on the springs that came off the light one and you get a door that fights the opener, won’t hold position where you leave it, and grinds through hardware. Adding reinforcement to a door you already own does the same thing, since struts change the weight being balanced, so sizing the counterbalance belongs in the install quote or as separate work at garage door spring repair.
Never adjust, wind, unwind, replace, or release the tension on the torsion springs above the door or the lift cables running down the sides, because they hold hundreds of pounds of stored energy and get replaced with winding bars by a trained technician. Drive gear internals and main power wiring are technician work too.
Retrofit or replace, and how hurricane doors get specified
There are four honest routes here, plus one that isn’t.
| Route | What it gets you | What it asks of you | Where it falls short |
|---|---|---|---|
| New rated door | Design pressure and impact in one approved assembly | Sound jamb, correct hardware, resized counterbalance | Biggest job of the five |
| Approved kit on the door you own | A rating on a door that’s otherwise sound | The kit must be tested with your door model | Many doors have no approved kit |
| Approved shutter over the opening | Impact protection without touching the door | Storage, plus somebody to fit it before landfall | Nothing for pressure on the door itself |
| Center post kit | Cuts the span the door bridges alone | A floor anchor and a header fitting, both fitted right | Set before the storm, pulled after |
| Plywood screwed on overnight | Something rather than nothing | An hour you may not have | No approval, no inspection value |
Work the specification for hurricane doors in this order.
Measure the finished opening
Width and height at the masonry or framing, not off the old door.
Get your numbers from the building department
Design pressure both ways, and whether impact rating or opening protection applies where you are.
Look hard at the jamb and header
Rated hardware needs something solid to bite into, so rot or a shimmed jamb becomes part of the job.
Ask for the approval document by number
Then check the track, struts, hinges, and fasteners on your quote against that sheet.
Confirm the counterbalance is being resized
A quote that never mentions springs on a heavier door has a hole in it.
Ask who pulls the permit
In most coastal jurisdictions a rated door is permitted work, and the paperwork is worth as much as the steel.
Rated doors are wind tested, not watertight, and the FEMA resources on protecting garage doors in high wind (fema.gov) make the same point for existing homes. Driving rain still finds the same gaps it always did, and sealing them is weatherstripping work at garage door weatherproofing.
What decides the cost of hurricane doors
Opening width leads, then the design pressure your zone requires, whether impact is met by the door or by protection over the opening, the glazing, and the condition of the jamb and header the rated hardware fastens into, so call 833-435-4540 with your opening width and your county.
FAQs: hurricane doors
Are hurricane doors required where I live?
That depends entirely on your jurisdiction. Coastal counties in high wind regions generally require a rated assembly on new construction and on replacement doors, while inland counties often ask for nothing. Your building department publishes the design pressure your address has to meet and whether opening protection applies. Call Century Garage Door Service at 833-435-4540 and describe your opening.
Can I add a rating to the door I already own?
Sometimes, yes. If your door model has an approved reinforcement kit and the door is otherwise sound, that kit fitted to its instructions can get you there. Plenty of doors have no approved kit at all, and a homemade brace carries no approval behind it. The other route is an approved shutter or panel over the opening, which many jurisdictions accept instead.
What's the difference between wind rated and impact rated?
Wind rating is design pressure, meaning the force the door takes pushing in and pulling out. Impact rating adds a missile test, then pressure cycles run against the damaged panel. A door can carry a high design pressure with no impact approval whatsoever. Where flying debris is the concern, codes ask for both, or for a pressure rating plus protection over the opening.
Do hurricane doors need different springs?
Usually, yes. A rated door weighs more than the one it replaces, so the counterbalance above the opening gets sized to that new weight. Skip it and you’re left with a door that strains the opener, won’t hold position, and wears its hardware out early. Sizing is technician work with the right tools, and it belongs in the written quote.
Is a hurricane proof garage door a real thing?
No. Nothing on the market is proof against a storm with no upper limit, and any listing leaning on that word is selling an adjective. What exists is a tested assembly with a stated design pressure and, where required, an impact approval. Ask for the approval number, then check that the door on your quote actually matches it.
How do I tell if the garage door I have now is hurricane rated?
Look inside the door for a label or a stamp on a section. It often sits near an end stile. The approval it names covers the whole assembly, not one part. Labels go missing, though. Your building department keeps a permit record for your address, so check there next. Hurricane doors always have paperwork behind them. A door with none is unrated until someone proves otherwise.
Will parking a car against the garage door brace it in a storm?
No. Wind pressure leaves the panel through the track brackets and the jamb fasteners, so a bumper pressed against the bottom section does nothing for the connections that actually let go. It also puts your car under whatever comes through. Hurricane doors reach their rating through tested hardware, and where a wide span needs help, that job belongs to an approved center post kit.
Get hurricane doors specified for your address
Hurricane doors come down to paperwork as much as steel, and the paperwork changes county by county. Century Garage Door Service answers live around the clock at 833-435-4540 and gives you a two-hour arrival window with a text when the truck rolls. You get a written quote before anybody picks up a tool, and only the quoted trip fee if you decline it. Our trucks run stocked, so most jobs finish in one visit, and the workmanship is warrantied. Seniors and military get a standing discount. So do first responders. If you’d rather have the whole assembly looked over first, book a garage door safety inspection.
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