Metal Roof vs. Shingle: Which Do Florida Insurers Prefer?

Short answer: Florida insurers prefer standing seam metal, installed correctly and documented properly. Longer answer: the preference shows up in two ways. First, metal roofs qualify for the highest available wind mitigation premium credits through the OIR-B1-1802 form. Second, carriers are far less likely to trigger age-based non-renewal on a 20-year-old metal roof in documented good condition than on a 15-year-old shingle roof approaching the end of rated life.

What the preference does not mean: that every metal roof automatically lowers your premium. The discount comes from documentation, not just from having metal on the house.

How Florida wind mitigation credits work

Florida carriers are required by state law to offer wind mitigation premium credits based on the findings of the Florida Uniform Mitigation Verification Inspection, documented on the OIR-B1-1802 form. This is the standard form produced by certified wind mitigation inspectors and governed by the Florida Office of Insurance Regulation.

The form evaluates six categories:

1. Building code compliance — the year of original construction relative to code updates
2. Roof cover type — the material on the roof and its rated wind resistance
3. Roof deck attachment — how the decking is fastened to the framing
4. Roof-to-wall connection strength — clips, single wraps, double wraps, or anchor bolts
5. Roof shape — hip vs. gable, with hip roofs performing better in wind
6. Opening protection — windows and doors rated for hurricane impact

Each category earns a score, and those scores combine to produce the premium credit percentage applied to the wind portion of your homeowner policy. In coastal Florida counties, the wind component can represent 40 to 60 percent of the total homeowner premium. That is the portion the credits directly reduce.

Where metal roofing scores the highest credits

Category 2, roof cover type, is the category most directly affected by replacing shingles with metal. The OIR-B1-1802 rates roof cover by wind rating class.

Standing seam metal systems with tested and documented wind uplift values, such as a Miami-Dade Notice of Acceptance (NOA) or Florida Building Code (FBC) product approval, qualify for the highest cover type category on the form. That documentation is what the inspector needs to assign the top score.

Asphalt shingles rated to 130 mph under FBC can also reach the top cover category, but only when the rating is documented and the installation meets current FBC nailing requirements. An older shingle roof installed before current code typically scores lower, regardless of what the original product was rated for.

Category 3, roof deck attachment, is also improved during a full replacement: a complete tear-off and re-nail to current FBC fastener patterns is documented by the inspector and can move that category score up as well.

What "up to 25% discount" actually means and does not mean

The phrase you see in wind mitigation marketing reflects the potential wind premium reduction on a policy where the wind component is a large share of the total. The actual dollar reduction on any individual policy depends on three things:

• What the wind premium portion is on that specific policy
• What score the home achieves across all six categories, not just roof cover
• The carrier's filed rate credits for each category score

A home that already has hip roof geometry, 2002 or later construction, and impact windows will see a smaller incremental improvement from a metal roof replacement than a pre-2002 gable-roof home upgrading from original shingles. The math is additive across all six categories, not just the roof material category.

The My Safe Florida Home program, which provides state-funded wind mitigation inspections and improvement grants, reports average annual insurance savings of approximately $900 per year for homes that complete the program. That figure spans all types of improvements, not metal roofing alone.

Metal roofing and the 15-year age threshold

Most Florida private carriers trigger a roof inspection requirement when the insured roof reaches 15 years. For asphalt shingles, a 15-year-old roof is roughly halfway through its rated service life in Florida's UV-intense, storm-active climate. Carriers know this, and many treat it as a risk trigger for non-renewal or coverage changes.

For metal roofing, the rated service life is 40 to 50 years or more for standing seam systems installed to current specifications. A 15-year-old standing seam metal roof in documented good condition is nowhere near end of life, and carriers treat it accordingly.

Citizens Property Insurance will not write new coverage on shingle roofs older than 25 years. There is no equivalent age cutoff for metal roofing in their published underwriting guidelines, though condition still matters. Florida SB 2-D, passed in 2022, also restricted carriers' ability to non-renew policies based solely on roof age for roofs with remaining useful life, which brought more protection to metal roof owners specifically.

This matters for long-term ownership: a metal roof is unlikely to create carrier friction through the owner's remaining time in the home. A shingle roof will, typically starting around the 15-year mark and becoming a real issue by year 20 to 25.

Standing seam vs. exposed fastener: the insurance difference

Not all metal roofs score equally on the OIR-B1-1802. The distinction that matters most for insurance purposes is standing seam vs. exposed fastener.

Standing seam systems use concealed clips that lock panels together without penetrating the metal surface. The tested uplift values for quality standing seam systems are high, and Miami-Dade NOA or FBC product approval documentation is readily available for the leading manufacturers. These systems consistently earn the top cover type category on the inspection form.

Exposed fastener panels use screws driven through the face of the panel into the substrate. They perform well in wind when installed correctly, but the tested uplift values are typically lower than standing seam, and the neoprene washers under the screw heads introduce a long-term maintenance point that inspectors note.

For a primary residence in a coastal Florida county, standing seam is the higher-value choice from both an insurance documentation and longevity standpoint. Coastline installs standing seam systems with product approval documentation included in the project package.

The lifetime cost calculation

Metal roofing costs more upfront than architectural shingles. The premium varies by gauge, profile, and roof complexity, but it is real and should go into any comparison honestly.

The calculation that changes the math is the 40-year ownership horizon: one metal roof versus two shingle replacements, plus annual wind mitigation savings compounded over those years. When you run that comparison with actual numbers specific to the property, the lifetime cost difference between metal and shingle narrows significantly for most homes in coastal Florida.

Coastline offers financing through Ygrene and Synchrony Bank. For homeowners who plan to stay in the home long-term, a financed metal roof with lower insurance premiums can be structured so that the monthly premium savings partially offset the monthly financing cost. The specific numbers depend on the property and the current policy, which is why Coastline provides a written comparison on every metal roofing estimate.

Is the insurance savings enough to justify the upfront cost alone?

No, not for every homeowner. The decision depends on how long you plan to stay and where your current roof is in its life cycle.

The factors that favor metal roofing:

• Planning to stay in the home long-term, 15 years or more
• Home is in a high wind-exposure zone along the Gulf Coast
• Current shingle roof is aging and will need replacement within 5 to 10 years anyway
• The home's existing wind mitigation score is low, meaning more room to improve
• Carrier friction has started on an older shingle roof

The factors that favor shingle:

• Shorter ownership horizon, planning to sell in five years or less
• Existing roof is newer and in documented good condition
• Budget constraints make the upfront cost prohibitive
• Home's construction and existing wind mitigations already score well

Coastline will give you a side-by-side written comparison of metal vs. shingle on every metal roofing estimate. The goal is a decision you understand, not a sale. If shingle replacement is the right call for your situation, we say so. See also our post on Florida roof age and insurance requirements for more on how carriers are treating aging roofs right now.