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FORTIFIED roof NC

The FORTIFIED roof in North Carolina

A plain reading of the IBHS standard, what it adds to the state code, and the two NCIUA grant programs that pay eligible coastal policyholders to build to it.

Updated September 12, 2026 · Every figure links to its source · Sources

What FORTIFIED means

FORTIFIED is a voluntary construction and re-roofing program written by the Insurance Institute for Business & Home Safety, the research arm of the property-insurance industry, from what its wind-tunnel and field studies show about how roofs fail. It comes in three levels — Roof, Silver and Gold — and the first is by far the most common, because a roof can be brought to it during an ordinary replacement. IBHS reports that more than 100,000 families have chosen the program.

The word to hold onto is designation. A FORTIFIED Roof is not a product or a brand of shingle; it is a set of installation requirements, verified by an independent evaluator with photographs at each stage, and recorded in a certificate that stays with the house. That certificate is what an insurer reads, and it is why the standard has become the coastal market’s shorthand for a roof built properly.

The four requirements

IBHS describes the FORTIFIED Roof as a set of damage-reducing upgrades that work together. In the order the wind meets them:

  1. Stronger edges. Because damage usually begins where wind gets under the roof edge, the standard requires a wider drip edge and a fully adhered starter strip, installed together so that the eave and rake cannot be peeled.
  2. A sealed roof deck. The seams of the sheathing are taped or covered with a qualifying underlayment so that, if the covering is lost, the deck itself keeps most of the water out of the house. IBHS singles this out as the step that prevents the cascade of interior damage.
  3. Better attachment. The deck is fastened with ring-shank nails in an enhanced pattern rather than smooth nails; IBHS states that ring-shank nails nearly double the roof’s resistance to wind forces.
  4. Tested and rated roof covers. Any covering can qualify, but it must carry the right rating: asphalt shingles at ASTM D3161 Class F or ASTM D7158 Class H, metal panels tested for the site’s design pressures, tile and other covers to their own listed tests. The optional hail supplement adds an impact rating — UL 2218 Class 4 for metal, and IBHS’s own Good or Excellent ratings for shingles.

Notice what is absent: nothing exotic, and nothing that a good crew does not already know how to do. The difference is that every step is specified, photographed and checked. That, rather than any single material, is what the designation certifies.

How it relates to the North Carolina code

The North Carolina State Building Code, published with its effective dates by the Office of State Fire Marshal, is the legal floor; every permitted roof in the state meets it, and the coastal counties’ higher design wind speeds already require more nails and better flashing than a roof in the Piedmont. FORTIFIED sits above the floor. The code does not require a sealed deck, ring-shank nails throughout, or the adhered starter strip, and it does not require an outside evaluator to photograph the work. A FORTIFIED roof is a code roof plus those things, and the permit and inspection still apply.

For a homeowner the practical questions are whether the contractor has done FORTIFIED work before, whether the evaluator has been engaged before the tear-off (the deck stage cannot be photographed afterwards), and whether the shingle or panel on the quote carries the required rating. All three are easy to ask and easy to verify.

The NCIUA grants

The North Carolina Insurance Underwriting Association — the state’s residual-market wind-and-hail insurer for the beach and coastal areas — was one of the first organisations in the country to pay policyholders to strengthen their roofs. Two programs exist.

ProgramWho is eligibleWhat it offers
Strengthen Your RoofNCIUA policyholders in areas east of the Intracoastal Waterway and on the Outer Banks and barrier islandsA grant of up to $10,000 toward an IBHS FORTIFIED Roof, with an evaluator and a directory of participating contractors
Strengthen Your Coastal RoofPolicyholders in areas above the waterway in eighteen counties: Beaufort, Brunswick, Camden, Carteret, Chowan, Craven, Currituck, Dare, Hyde, Jones, New Hanover, Onslow, Pamlico, Pasquotank, Pender, Perquimans, Tyrrell and WashingtonThe same FORTIFIED Roof grant structure for the counties behind the beach

Eligibility is checked by policy number and mailing ZIP on each program’s site, an application requires four exterior photographs of the house, and the NCIUA’s own pages carry the program rules. The programs quote policyholders who came through Florence, Dorian and Isaias with FORTIFIED roofs intact while neighbours’ shingles lay in their yards — anecdote rather than statistics, but the kind that persuades a coastal homeowner.

If you are not an NCIUA policyholder, the standard is still open to you. Private insurers set their own credits for a FORTIFIED designation, and the certificate travels with the house at sale.

Is it worth it?

The honest answer is that it depends on three numbers you can obtain and one you cannot. The three: the premium credit your insurer offers for the designation, the grant amount if you qualify, and the additional cost the contractor quotes for the sealed deck, ring-shank fastening, adhered starter and evaluator — on a roof that is being replaced anyway, that increment is a fraction of the job. The one you cannot: the probability that the next Fran or Florence reaches your roof during its life. The Weather Service’s count of 167 tropical cyclones since 1851 suggests it is not small.

Where the roof is being replaced after storm damage, the calculation is easier still, because the deck is open and the marginal cost of doing it to the standard is at its lowest. That is the moment most FORTIFIED roofs in North Carolina are built.

Frequently asked questions

Short answers; the sections above carry the detail and the sources.

What is a FORTIFIED roof?
A roof installed to the IBHS FORTIFIED Roof standard: a wider drip edge with a fully adhered starter strip, a sealed roof deck, ring-shank nails in an enhanced pattern, and a roof cover with the highest wind rating (ASTM D3161 Class F or D7158 Class H for shingles). An independent evaluator photographs each stage and issues a designation certificate.
How much does the NCIUA Strengthen Your Roof grant pay?
Up to $10,000 toward an IBHS FORTIFIED Roof for eligible NCIUA policyholders. Strengthen Your Roof covers areas east of the Intracoastal Waterway and the Outer Banks; Strengthen Your Coastal Roof covers eighteen counties above the waterway, from Brunswick and New Hanover to Craven, Beaufort and Dare.
Is a FORTIFIED roof required by the North Carolina building code?
No. The state code is the legal minimum and already sets higher design wind speeds for the coastal counties. FORTIFIED is voluntary and adds the sealed deck, ring-shank nailing, adhered starter strip and evaluator verification on top of the code; the permit and inspection still apply.
Can a metal roof be FORTIFIED?
Yes. Any roof cover can qualify as long as it meets the standard’s testing requirements; metal panels must be tested for the site’s design pressures, and the optional hail supplement asks for a UL 2218 Class 4 impact rating.
Can an existing roof be certified without replacing it?
Generally no, because the sealed deck and the ring-shank nailing pattern are installed with the deck exposed and must be photographed by the evaluator at that stage. The designation is normally earned during a re-roof.
Do insurers give a discount for a FORTIFIED roof?
Many do, and the NCIUA funds the grant programs precisely because the designation reduces claims. The size of the credit varies by insurer and policy; ask your carrier for its FORTIFIED credit in writing before you commit.

Next step

Find a vetted roofer in North Carolina

A FORTIFIED job goes to a roofer who has built to the standard before and will book the evaluator before the tear-off. The National Roofing Directory’s North Carolina pages list roofing contractors by city, with the details you can cross-check against the Licensing Board.

Browse North Carolina roofing contractors

Sources

  1. FORTIFIED: a program of IBHS — Insurance Institute for Business & Home Safety (IBHS)
  2. FORTIFIED Roof: requirements and rated roof covers — Insurance Institute for Business & Home Safety (IBHS)
  3. Codes — current and past editions, with applicability dates — NC Office of State Fire Marshal
  4. Strengthen Your Roof grant program — North Carolina Insurance Underwriting Association (NCIUA)
  5. Strengthen Your Coastal Roof grant program — North Carolina Insurance Underwriting Association (NCIUA)
  6. NCJUA / NCIUA — North Carolina Joint Underwriting Association / Insurance Underwriting Association
  7. Tropical Cyclone Climatology 1851–2020, Newport/Morehead City forecast office — National Weather Service (NOAA)