Roofing Guide

What Broward's Hurricane Roofing Code (HVHZ) Means for Your Roof

Deerfield Beach sits inside one of the strictest roofing zones in the country. Here is what that means for repairs, replacements, permits, and insurance.

Written & reviewed by Sean, Owner of Johns Roofing Services · Last updated: September 2026

Roofing in Deerfield Beach is not governed by the same rules as roofing in most of Florida, let alone the rest of the country. Broward County, along with Miami-Dade, sits inside the High-Velocity Hurricane Zone, or HVHZ. It is the part of the Florida Building Code written for the areas most exposed to major hurricanes, and it sets tougher standards for how a roof is built, what products can go on it, and how the work is inspected. If you own a home here, understanding the basics helps you ask better questions and avoid contractors who cut corners.

What the HVHZ actually is

The High-Velocity Hurricane Zone is a designation in the Florida Building Code covering Broward and Miami-Dade counties. Because these areas face the highest design wind speeds in the state, the code requires roofing systems to resist stronger wind uplift and to use products that have been tested and approved specifically for these conditions. In practical terms, a roof assembly that is perfectly legal in a low-risk inland county may not be allowed on your home in Deerfield Beach. The materials, the fasteners, the spacing, and the way everything is attached all have to meet the higher bar.

Product approval: not every material qualifies

One of the biggest differences in the HVHZ is product approval. Roofing products used here generally need a Miami-Dade Notice of Acceptance or a Florida Product Approval that covers HVHZ use. This applies to shingles, tiles, underlayment, flat-roof membranes, coatings, and the fasteners that hold it all down. The approval means the product was tested for the wind and water conditions this region sees.

For a homeowner, the takeaway is simple: the cheapest material a contractor can find is not necessarily one that is legal to install on your roof. When you are comparing options, it is fair to ask whether the proposed system carries the approvals required for the HVHZ. A reputable roofer will have that answer ready.

Permits and inspections are not optional

In Broward County, roofing work generally requires a permit and one or more inspections. Permits and inspections serve a real purpose. A permitted, inspected roof is documented as having been built to code, which matters when you sell the home and often when you file an insurance claim. Unpermitted roofing work is one of the problems we are called in to fix, because it can leave a homeowner with a roof that was never inspected, cannot be verified, and becomes a headache at closing or claim time.

The permitting step also protects you from the crew that wants to work fast and cash-only with no paper trail. If a roof is worth putting on your home, it is worth permitting. Ask any contractor whether the job will be pulled under permit and inspected where the county requires it.

The re-roof process, step by step

A code-compliant replacement in the HVHZ follows a defined path, and knowing it helps you spot a crew that is skipping steps. It starts with pulling a permit for the scope of work. The old roof is torn off down to the deck so the wood underneath can actually be seen. The decking is inspected and any rotted or delaminated sheathing is replaced, and the sheathing is re-nailed to current attachment standards. A secondary water barrier is applied to the deck, which is one of the most important storm-season upgrades because it keeps water out even if the surface layer is damaged by wind. Then the approved underlayment and the new roof system go on, installed to the manufacturer's HVHZ specifications. Finally the work is inspected. Each of those stages exists for a reason, and each is a place where a low-bid crew can cut a corner you will not see until the next storm.

The 25 percent rule

Florida's building code includes a provision often called the 25 percent rule. In general terms, if more than a quarter of a roof section is repaired or replaced within a twelve-month period, that portion is expected to be brought up to current code rather than simply patched back to its old condition. There are specific conditions and exceptions, and how it applies depends on the roof and the work, but the principle matters for homeowners: a large repair can trigger code-upgrade requirements. This is one more reason an honest assessment up front is worth having, because it affects whether a big repair or a full replacement is the better path.

Wind mitigation and your insurance

Beyond meeting code, some HVHZ construction features can matter for your insurance. A wind mitigation inspection documents things like the roof deck attachment, the presence of a secondary water barrier, and the roof-to-wall connections. In Florida these features can affect what an insurer sees when they look at your home. Keeping the documentation from a code-compliant replacement, and having a wind mitigation inspection where it applies, gives you evidence about how your roof is built rather than leaving it to guesswork. Your insurance agent can tell you how these details apply to your specific policy.

How the HVHZ affects repairs versus replacement

For small, isolated repairs, the HVHZ rules mostly show up in the materials and fasteners used and in whether a permit is required for that scope. For replacements, the impact is much larger: the entire system has to meet current HVHZ standards for uplift resistance, attachment, and product approval, and it will be permitted and inspected. This is part of why a code-compliant replacement in this region is a more involved job than a simple reroof elsewhere, and why it resets the roof's standing with both the county and your insurer.

Common HVHZ mistakes we are called to fix

Over the years the same avoidable problems come up. Unpermitted work is near the top: a roof that went on fast and cheap with no permit and no inspection, which the homeowner only discovers when they try to sell or file a claim. Wrong or unapproved materials are another, where a product that was never approved for this zone was installed to save money. We also see skipped underlayment and secondary water barrier steps, poor flashing at walls and penetrations, and fasteners that were spaced or driven incorrectly. Each of these looks fine on a calm day and shows up as a leak or a failure when the weather turns. Fixing them properly usually costs more than doing it right the first time would have.

Tile, shingle, and flat roofs under the HVHZ

The zone's requirements apply across roof types, but they show up differently. Tile systems have specific attachment requirements so tiles resist uplift and do not become projectiles in high wind. Shingle systems need approved shingles installed with the correct nailing pattern and enhanced edge details. Flat and low-slope roofs, common on South Florida homes and nearly universal on commercial buildings, depend on an approved membrane or coating, correct attachment, and drainage that clears water rather than letting it pond. Whatever the type, the same theme holds: approved materials, correct installation, and inspection.

Why this matters for insurance

Insurers in Florida pay close attention to roofs, and the age and condition of a roof can affect coverage and premiums. A roof that was properly permitted, built to HVHZ standards, and documented gives you something to point to. A roof with no permit history or no proof of code-compliant installation gives an insurer room to question it. When your roof is replaced, keeping the permit and inspection records is worth the drawer space, because those documents are the evidence that the work was done to code.

The bottom line for Deerfield Beach homeowners

Living in the HVHZ means your roof is held to a higher standard than most of the country, and that is a good thing when the next storm arrives. The practical steps are the same for any homeowner here: use a contractor who knows the local code, insist on approved materials, make sure the work is permitted and inspected, and keep the paperwork. If you want a clear, honest read on where your roof stands against these requirements, a free inspection is the place to start.

Related: Roof Replacement · Roof Leak Repair · Commercial Roofing · All Roofing Services