Florida Building Code & impact windows
The Florida Building Code (FBC) governs every window and door replacement in the state. For homeowners, the practical questions are: do I need impact-rated products at my address, what design pressure does each opening have to meet, and what does the inspector actually look at? Here's how it works in plain English.
The wind-borne debris region
The FBC defines a wind-borne debris region (WBDR) — generally a strip along the Atlantic and Gulf coasts and parts of the Keys — where opening protection is required. Inside the WBDR, every glazed opening must either be impact-rated or be paired with a code-approved shutter or panel system. Outside the WBDR, opening protection is optional and product choice is more flexible.
Design pressure
Every window and door has to meet a design pressure (DP) appropriate to the building's height, exposure category, and opening location. A second-story corner unit on a coastal home faces higher pressures than a ground-floor opening on an inland one-story. The manufacturer's Florida Product Approval lists the DP for each tested configuration. The installer matches openings to approvals — not the other way around.
Florida Product Approval & Miami-Dade NOA
Florida Product Approval (a state-level FL number) and Miami-Dade Notice of Acceptance (NOA) are the two documents inspectors look at. Both certify that the full system — glass, frame, anchors, and installation method — has been tested to FBC standards. A "hurricane glass" sticker on the unit means nothing without the underlying approval documentation submitted with the permit.
Permitting and inspection
Every replacement window or door in Florida requires a permit. The permit package includes the Florida Product Approval, the proposed anchoring schedule, and (for impact protection) the design pressure rationale. The final inspection verifies the installed product matches the approval, that fasteners are correctly sized and spaced, and that the perimeter is properly sealed.
What this means for you
You don't have to memorize any of this. A licensed installer pulls the permit, submits the product approval, and meets the inspector. What you should expect: a permit number, a printed or digital product approval, and a passed final inspection on file with your county. If anyone offers to "do it without a permit," walk away — it invalidates your insurance and creates a problem at resale.