A wind-rated garage door is built and tested to stay in its opening under a specific wind load. In hurricane country that matters, because a failed garage door lets wind into the house and can lead to roof damage. Here’s how to tell whether your door is rated, what the numbers mean, and what code expects.
How to check if your door is wind-rated
Look for a label or sticker on the inside of the door, usually on one of the end stiles (the vertical edges) or near the top of a panel. A rated door’s label typically shows:
- The manufacturer and model number
- The design pressure rating (positive and negative, in pounds per square foot)
- Whether it’s impact-rated
- A product approval number (in Florida, a Florida Product Approval number; in Miami-Dade and Broward, often a Notice of Acceptance, or NOA)
No label? The door may still be rated, but you’d need the original paperwork or the manufacturer to confirm it. For insurance and grant inspections, a missing label usually counts as not rated.
What the ratings mean
Design pressure (DP). The force the door is tested to withstand, in pounds per square foot (psf). There are two numbers: positive (wind pushing in on the door) and negative (suction pulling it outward, which happens on the side and back of a house). Higher numbers mean a stronger door. The rating you need depends on your area’s design wind speed, the door’s size and where it sits on the house.
Impact rating. On top of wind pressure, an impact-rated door has been tested against flying debris, typically a large piece of lumber fired at the door, and then put through pressure cycles. Impact-rated doors are required in Florida’s High-Velocity Hurricane Zone and in other areas where code calls for debris protection.
What makes a door strong enough
Wind-rated doors usually combine:
- Horizontal struts across the back of the panels
- Heavier-gauge steel or reinforced panels
- Stronger hinges, rollers and tracks, with tracks anchored more firmly to the framing
- Approved installation: the door is only as strong as how it’s fixed to the building. The installer must follow the manufacturer’s tested installation drawings
What codes require
In Florida, garage doors must meet the Florida Building Code for your area’s wind speed and carry state product approval. Miami-Dade and Broward counties are a High-Velocity Hurricane Zone with stricter testing and impact requirements. Many coastal counties in other states, especially along the Gulf and Atlantic, adopt their own wind-load requirements through the International Residential Code. Your installer and local building department can tell you exactly what applies, and replacing a garage door often needs a permit in these areas.
Retrofitting an existing door
Bracing kits and retrofit struts exist for some door models. To count for code, insurance or grants, a retrofit must be approved for your specific door. Temporary storm braces that you put up before a hurricane add protection but don’t make the door “rated.” On an older door, a new rated door is usually simpler and better documented. Our repair or replace guide and garage door price guide help you weigh it up.
Insurance and grants
A rated garage door, documented on a wind-mitigation inspection, can count toward insurance discounts. In Florida, it can also fall under opening protection in the My Safe Florida Home program. See hurricane garage doors for the grant, savings and current status.
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Frequently asked questions
Where is the wind rating label on a garage door?
Usually on the inside of the door, on an end stile or near the top panel.
What does a negative design pressure mean?
It’s the suction force pulling the door outward, which matters on the sides and back of a house in high winds.
Is a wind-rated door the same as impact-rated?
No. Every impact-rated door is wind-rated, but not every wind-rated door has passed impact testing.
Do I need a permit to replace a garage door in Florida?
Often, yes. Your installer or local building department can confirm.
