HVHZ is a geographic zone (Miami-Dade and Broward). Impact rating is a product certification. They're related but not the same thing, and confusing them can cost you money or code compliance.
If your home already has impact windows, you typically do not need hurricane shutters. Impact windows are standalone opening protection under the Florida Building Code, but there are specific scenarios where adding shutters makes sense.
Miami-Dade County has the strictest impact window requirements in the United States. Every replacement must carry a Miami-Dade NOA. Here's what that means for your project, your products, your permits, and your insurance.
