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HVHZ roofing code guideWhy does roofing cost more in Miami-Dade and Broward? The HVHZ code, explained
The Florida Building Code defines the High-Velocity Hurricane Zone (HVHZ) as Broward and Miami-Dade counties, and gives it its own roofing sections. Under Section 1512.2.1, every roofing component, roofing system and roofing assembly there must have a valid and current product approval — one that covers the HVHZ, such as a Miami-Dade County Notice of Acceptance (NOA) or a statewide Florida Product Approval that is approved for use in the HVHZ.
What HVHZ actually requires
Sections 1512 through 1525 of the Florida Building Code, Building set the minimum requirements for the materials and installation of roofing in the HVHZ. Section 1512.2.1 requires that all roofing components, roofing systems and roofing assemblies have a valid and current product approval, and that where the manufacturer's published instructions conflict with the product approval, the product approval prevails.
The approval has to be one that covers the HVHZ, such as a Miami-Dade County Notice of Acceptance (NOA) or a statewide Florida Product Approval that is approved for use in the HVHZ. Roofing products are one of the categories the Florida Building Commission approves statewide under Rule 61G20-3 of the Florida Administrative Code (Rule 61G20-3.001), each approval issued with its own limitations of use (Rule 61G20-3.007), and the state's product-approval records mark whether an approval covers use in the HVHZ. Once a product holds statewide approval, section 553.842(4) of the Florida Statutes bars a local jurisdiction from requiring further testing or evaluation as a condition of using it, as long as it is used consistent with the conditions of its approval.
Why that can raise the price
Two effects follow directly from the code: (1) only products whose approval covers the HVHZ can be used, which narrows the materials a roofer can quote; and (2) the product approval, not the manufacturer's general instructions, sets the installation method, on top of the HVHZ-specific installation rules in Sections 1512 through 1525.
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This page explains a public program or building code and is not legal advice. It is not a binding quote — a licensed local contractor or your building's engineer gives the firm number for your specific project.
Sources
- Florida Building Code, Building (2023, 8th ed.) — Chapter 2, Section 202: definition of High-Velocity Hurricane Zone (Broward and Miami-Dade counties)
- Florida Building Code, Building (2023, 8th ed.) — Chapter 15, Sections 1512.1 and 1512.2.1: HVHZ roofing scope and the product-approval requirement
- Florida Statutes § 553.842, Product evaluation and approval — subsection (4): statewide approval precludes further local testing or evaluation; subsection (8)(a): Miami-Dade County's Product Control as a Commission-approved evaluation entity
- Florida Administrative Code Rule 61G20-3.001, Product Approval — Scope (roofing products)
- Florida Administrative Code Rule 61G20-3.007, Product Approval by the Commission — approval for statewide use in accordance with its approval and limitations of use
- Florida Building Commission — Product Approval search (filter: Approved for use in HVHZ)
- Miami-Dade County — Product Control Search (look up a product's Notice of Acceptance)
Common questions
Is HVHZ just a Miami thing?
No. The Florida Building Code defines the High-Velocity Hurricane Zone as Broward and Miami-Dade counties (Section 202).
Can my contractor use any roofing product they want?
No. In the HVHZ, every roofing component, system and assembly must have a valid and current product approval (Florida Building Code Section 1512.2.1) — one that covers the HVHZ, such as a Miami-Dade County Notice of Acceptance (NOA) or a statewide Florida Product Approval that is approved for use in the HVHZ.
Is a Miami-Dade NOA the only approval accepted in the HVHZ?
No. A statewide Florida Product Approval that is approved for use in the HVHZ also covers it, and under section 553.842(4) of the Florida Statutes a local jurisdiction cannot require further testing or evaluation of a statewide-approved product used consistent with the conditions of its approval.
How do I verify a product's approval?
Look up an NOA in Miami-Dade County's Product Control Search, or a statewide approval in the Florida Building Commission's Product Approval search, where each approval shows whether it is approved for use in the HVHZ. Both are linked in Sources below.