The garage door is often the largest opening in a South Florida house, and it is the one people leave for last. Windows are visible from the street. The garage is a panel you drive past. In a hurricane, that panel is still a wall that can fail, pressurize the garage, and then the house. In Miami-Dade and Broward, both of which are entirely inside the High-Velocity Hurricane Zone, a replacement garage door has to be a rated assembly, not a decorative panel with a stronger spring.
Florida Impact Windows & Doors supplies and installs impact garage doors as part of whole-opening projects. We are the dealer-installer. The door, the track, the reinforcement, and any glass in the sections are tested together. A Miami-Dade Notice of Acceptance or the approval your building department requires has to match that exact assembly. Mixing a rated section with an unrated track, or cutting in a window lite that was never part of the test, is how a door looks finished and still fails an inspection.
What the HVHZ is asking the door to do
The HVHZ standard is the same idea as it is for windows: the product has to resist a large-missile impact where the test requires it, and it has to stay in the opening through pressure cycles. Garage doors pick up a lot of area, so the design pressure and the width of the opening matter. A single-car door on a sheltered inland street is not the same engineering problem as a double door on an exposed corner in Fort Lauderdale or on a Miami-Dade house facing a canal. Our HVHZ guide explains the zone. The door is simply the biggest product inside it.
Glass in a garage door is a second question. Many homeowners want a row of windows across the top section. Those lites have to be impact glass that is part of the door's approval. A non-rated lite, even a small one, is a glazed opening. Wind-mitigation inspectors look at it. If the rest of the house is protected and that lite is not, you have spent the money and left a hole in the paperwork.
A brace kit is not automatically a rated door
After a storm scare, people ask about a retrofit brace or a vertical reinforcement kit for the door they already have. Some of those products are legitimate and approved for specific door sizes. Many are sold as if any brace turns any old door into an HVHZ product. It does not. The inspector and the plan reviewer need an approval that names the door, the reinforcement, and the opening size. If your existing door is rusted, bent, or full of unrated glass, a brace is the wrong conversation. Replacement is the conversation. We would rather say that at the measure than after a failed inspection.
The same honesty applies to "wind-rated" marketing that never mentions missile impact. A door can be labeled for wind load and still not be the impact assembly your permit requires. Ask for the approval number and look up the configuration. The label guide is written for windows, and the habit is the same on a garage door: the number has to match what was installed.
Why the insurance form cares
On a wind-mitigation inspection, the garage is its own opening. Protecting every window and leaving a non-rated garage door is one of the most common ways homeowners miss the opening-protection credit they expected. The form in current use is OIR-B1-1802, and opening protection is all-or-nothing in practice: one unprotected opening can cost the credit. Read the wind-mitigation overview before you assume the windows alone finished the job. We do not promise a dollar discount. Your carrier applies whatever credit the completed form supports.
An attached garage is also a water and pressure problem, not only an insurance checkbox. If the door fails, wind enters a volume that often shares a ceiling or a wall with bedrooms. That is why we talk about the garage during a window estimate even when the caller only asked about the front of the house. Phasing is fine. Forgetting the door is not.
Openers, springs, and the day the door is out
A rated door is heavier than the builder-grade panel it replaces, so the springs and the opener have to match the new weight. An old opener that barely lifted the original door is not a detail to reuse without checking. Battery backup is worth discussing if the garage is your storm entry, because a powered door that cannot be opened after the power drops is a nuisance you will feel on the first outage. The opening itself should not sit as a hole overnight. We schedule the removal and the set so the house is closed the same day, and we pull the permit the HVHZ cities expect for this work. If the driveway slope or a low header limits the door type, we catch that at the measure rather than at delivery.
A double-wide door on an exposed lot needs its own pressure check, not a copy of the single-car door down the street. Replacement includes the opening, the track anchorage, a compatible opener, and a permit when the jurisdiction requires one, which it does for this work in the HVHZ. If you want the garage included with the windows, say so when you book. Request a free estimate or call (754) 600-4876. The shop is at 3000 Stirling Rd, Hollywood, FL 33021.
Frequently Asked Questions
Does the HVHZ apply to garage doors?
Yes. Miami-Dade and Broward are entirely in the HVHZ, and a garage door is an exterior opening. A replacement needs an approval that matches the door assembly and the size of the opening.
Will a brace kit pass inspection?
Only if that kit is approved for your specific door and opening size and is installed as the approval requires. A generic brace on a damaged or unrated door is not a substitute for a tested assembly.
Can garage door windows cost me an insurance credit?
They can, if the lites are not impact-rated. Inspectors treat glazed sections as openings. Unrated glass in an otherwise protected house can keep you from the opening-protection credit.
Should I replace the garage door at the same time as the windows?
If the goal is whole-home opening protection, yes, or plan it as a deliberate second phase. Doing the windows alone and assuming the credit will follow is the mistake we see most often.