What FORTIFIED is
FORTIFIED is a construction and re-roofing standard from the Insurance Institute for Business & Home Safety (IBHS), a research group funded by the insurance industry. It is designed to keep roofs on and water out in high winds, hurricanes and, in some versions, hail. The first level, FORTIFIED Roof, focuses on the roof itself; higher levels (Silver and Gold) add openings and the connections between roof, walls and foundation.
A FORTIFIED Roof is inspected by a certified evaluator during installation and receives a designation certificate. Several states require or encourage insurers to offer discounts for FORTIFIED homes.
What the roof standard requires
According to IBHS, key parts of a FORTIFIED Roof include:
- Ring-shank nails for the roof deck, installed in a tighter pattern (at most 6 inches apart along panel edges and 12 inches in the field). IBHS says ring-shank nails nearly double the deck’s resistance to wind uplift.
- A sealed roof deck, using a full self-adhered membrane, taped seams plus underlayment, or two layers of underlayment, so water stays out even if shingles blow off.
- Drip edge at eaves and rakes, mechanically fastened at close spacing. IBHS checklists call for drip edge installed over the underlayment and fastened about 4 inches apart in a staggered pattern.
- Wind-rated shingles or other roof covers installed to the high-wind requirements, with extra attention to edges and ridges.
Hail versions of the standard also require impact-resistant roof coverings.
Why the roof edge matters
Wind damage usually starts at the edges: the eaves, rakes and corners of the roof, where uplift is strongest. Once the edge peels up, wind gets under shingles and underlayment and the damage spreads. That is why FORTIFIED pays so much attention to drip edge and edge fastening. The gutters hang right there, on the fascia below the drip edge, and the way they are installed can help or hurt.
How gutters fit in
Order of work
On a re-roof, the gutters usually come down first so the roofer can inspect and repair the fascia and roof edge, install the drip edge correctly and seal the deck. The gutters go back up (or new ones go up) after the roof edge is finished. If gutters stay on during the re-roof, the roofer has to work the drip edge and underlayment around them, which makes proper edge fastening harder.
Don’t compromise the edge
Some gutter guards and gutter aprons slide under the first course of shingles or are fastened through the roof edge. On a FORTIFIED roof, anything that lifts shingles, breaks the seal or adds penetrations at the edge should be discussed with the roofer and evaluator first. Guards that attach to the front lip of the gutter and rest on or under the drip edge without disturbing shingles are usually the safer choice. See drip edge and gutter apron explained.
Attach gutters firmly
A gutter that tears off in a storm can pull on the drip edge and fascia and damage the roof edge. Hidden hangers screwed into rafter tails through sound fascia, at close spacing, keep gutters where they belong. See gutter hangers explained and fascia repair before new gutters.
Size for the storm
FORTIFIED is about the roof surviving the storm. Gutters that overflow in the same storm send water down walls and into foundations. In hurricane and heavy-rain regions, 6-inch gutters with 3x4-inch downspouts are worth considering. See downspout size and placement.
State grant programs
- Alabama: Strengthen Alabama Homes, run by the Alabama Department of Insurance, has offered grants of up to $10,000 toward a FORTIFIED Roof for eligible owner-occupied homes. See Birmingham.
- Oklahoma: the Oklahoma Insurance Department’s Strengthen Oklahoma Homes program offers grants of up to $10,000 toward a FORTIFIED roof and reported its 500th completed home in September 2026. See Tulsa and Oklahoma City.
- Other states have run similar programs, often tied to hurricane or hail risk. Check your state insurance department for current rules, since funding rounds open and close.
These grants generally cover the roof, not gutters. Plan and budget gutter work separately, and schedule it with the roofer so it fits the process.
Hail versions and impact-resistant roofs
In hail country, IBHS offers a version of FORTIFIED that adds impact-resistant roof coverings. That matters for gutters too: a roof that survives hail with fewer damaged shingles also sheds fewer granules into the gutters, and a well-attached, heavier-gauge gutter is less likely to be dented or torn loose in the same storm. If you are building to the hail standard, consider heavier-gauge aluminum or steel gutters and downspouts, and guards made of metal rather than plastic. See hail-damaged gutters: what to do.
Insurance and documentation
FORTIFIED designations are backed by photos and inspections during the roof work. Keep a copy of the certificate and any photos, and add the gutter invoice and warranty to the same file. After a storm, that paperwork helps with claims and shows what was installed. If gutters are replaced later, ask the installer not to disturb the drip edge or roof edge, and note the work in the same file so the roof’s condition stays documented.
Common mistakes
- Rehanging old, bent gutters on a new FORTIFIED roof edge because they “still work.”
- Guards that slide under the first course of shingles and break the shingle seal.
- Spikes or screws driven through the drip edge rather than into the fascia below it.
- Leaving rotten fascia in place because the roofer and gutter installer each assumed the other would fix it.
- Downspouts that discharge at the foundation, so the roof stays dry but the basement does not.
Questions to ask
- Will the gutters come down during the re-roof, and who reinstalls them?
- Is the fascia sound, and how will rot be handled and priced?
- Will the drip edge be installed to the FORTIFIED requirements before gutters go back up?
- Do the gutter guards or apron affect the roof edge or shingle seal?
- Should the gutters be upsized or replaced while the roof edge is open?
Is it worth replacing gutters at the same time?
Often, yes. Old gutters are easily bent during removal, older spikes leave holes in the fascia, and matching new drip edge with new gutters gives the cleanest result. Replacing both at once also means one disruption instead of two. See new roof, new gutters?