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How roof age and material affect premiums
Roof age sets a rating factor and decides how storm damage is settled; material and impact ratings shape credits. What a new roof saves and how to document it.
Roof age and roofing material change what you pay in three ways: through a rating factor that steps up as the roof ages, through the terms on which storm damage is settled, and through credits for impact-resistant or FORTIFIED roofs. Age is the dominant input because it stands in for condition. Material decides how long the roof is expected to last, how it fails, and which discounts exist. A new roof rarely repays itself through premium alone, but it can move you out of a restricted policy and into a standard one.
Why insurers watch the roof
The roof is the first thing wind, hail and water reach. The Insurance Institute for Business & Home Safety (IBHS) says as much as 90% of catastrophe-related insurance claims include roof damage (FORTIFIED FAQ). Wind and hail is also the most frequent homeowners claim: ISO data compiled by the Triple-I put it at 2.80 claims per 100 house-years from 2019 to 2023, averaging $14,747 per claim (III). Roof damage sits at the center of most storm claims, so insurers price the roof's remaining life.
They find the roof's age on your application, in permit records and, increasingly, in aerial imagery (aerial imagery: how insurers inspect roofs from the sky). The year on file may not be the year you think it is. A partial replacement is not always counted as a new roof, and a roof replaced years after construction can sit in the file under the year the house was built until someone sends in the permit.
How age enters the price
Rating plans group roof age into bands, each with a factor that multiplies the base premium. The factors are filed with the state and vary by insurer, so the table below is an invented illustration of the shape, not a market rate.
| Roof age | Hypothetical factor | On a $2,000 base premium |
|---|---|---|
| 0 to 5 years | 0.90 | $1,800 |
| 6 to 10 years | 1.00 | $2,000 |
| 11 to 15 years | 1.10 | $2,200 |
| 16 to 20 years | 1.25 | $2,500 |
| Over 20 years | 1.50, or ineligible | $3,000 |
Notice the steps. A roof that crosses from one band to the next at renewal adds to your premium without any change in condition, which is one of the quiet reasons a renewal jumps (your home insurance premium jumped: what to do). Beyond the top band, many insurers stop pricing and start declining or requiring an inspection; the age-limit side is covered in roof age limits: when insurers won't cover an old roof. Florida and Texas restrict refusals based on roof age alone, and those rules are explained there.
IBHS offers a data point on how the industry views asphalt shingles. For applications submitted from January 1, 2027, its FORTIFIED program limits eligibility for homes with asphalt-shingle roofs to 15 years from the initial designation or the documented shingle installation date (IBHS Technical Bulletin FH 2026-03, September 29, 2026). That is a program rule, not a rating factor, but it shows where a leading research group puts the practical life of a shingle roof.
Material changes the picture
| Roofing material | How insurers tend to treat it | Watch for |
|---|---|---|
| Asphalt shingle | Most common; shortest age limits; most often written with an ACV endorsement or payment schedule | Hail-prone areas where the wind/hail deductible is a percentage |
| Impact-resistant shingle | Credit at some insurers, usually on the wind or hail portion of the premium | Credit rules differ by insurer; see below |
| Metal | Longer age limits; impact-resistant types resist functional hail damage | IBHS notes impact-resistant metal resists functional damage but is vulnerable to cosmetic dents; some policies add a cosmetic damage exclusion. See metal roofs and insurance |
| Concrete or clay tile, slate | Long service lives; usually allowed to run longer before age limits apply | Repairs and matching can be expensive (matching: when new shingles or siding don't match) |
| Wood shake | Restricted or surcharged in many wildfire areas | California's 10 CCR § 2644.9 lists a Class A fire-rated roof among the mitigation factors that must reduce the rate, and the CDI says wood shake does not qualify as Class A |
Citizens Property Insurance Corporation, Florida's insurer of last resort, posts one set of published thresholds: its inspections page says roofs older than 25 years (shingle) or 50 years (hard coverings such as tile, slate, clay, concrete or metal) require documentation of at least five years of remaining useful life (Citizens, read October 10, 2026). Private companies set their own, usually without publishing them.
Credits that can offset age
Impact-resistant (Class 4) roofs
A Class 4 rating comes from the UL 2218 test, in which steel balls are dropped on the covering; Class 4 means the product was still functional after being struck twice in the same spot by 2-inch steel balls (per the FORTIFIED Home Standard). The Texas Department of Insurance says a Class 4 roof covering "would receive the highest premium credit," but that the amount of discount for each class is set by the insurance company (TDI, page as of February 24, 2023). The test has limits: UL says it does not evaluate weathering or aging and that there is no currently established direct correlation between steel balls and real hailstones. IBHS's own ratings of 23 impact-resistant asphalt shingles in November 2025 found none rated Excellent, 18 Good and 5 Marginal. Impact-resistant (Class 4) roofs and hail discounts covers what to ask for.
FORTIFIED Roof
FORTIFIED Roof is a beyond-code re-roofing standard that adds a sealed roof deck, stronger deck nailing and locked-down edges. Studying Hurricane Sally claims, the University of Alabama's Center for Risk and Insurance Research, commissioned by the Alabama Department of Insurance, found that FORTIFIED homes at all levels studied had 55% to 74% lower loss frequency and 15% to 40% lower claim severity (IBHS). IBHS estimates re-roofing a 2,000-square-foot home to FORTIFIED typically adds $1,000 to $3,000, plus the evaluator's fee. See The FORTIFIED Home standard and insurance discounts.
Some states require insurers to price for it. Alabama, Louisiana, Kentucky and Minnesota (for the hail supplement) have FORTIFIED-specific discount laws, and Florida requires rate filings to include actuarially reasonable credits for features such as roof strength and roof covering performance (Fla. Stat. § 627.0629). Most mandates require a discount that is justified actuarially but do not set a percentage. Filed discounts vary widely: the Louisiana Department of Insurance's July 2026 report lists FORTIFIED Roof discounts running from single digits up to the mid-40s in percent, and most insurers apply them to the wind and hail portion of the premium (LDI). Grants of up to $10,000 are available in Alabama, Louisiana, Oklahoma and, as the state share, Florida; windows open and close, so check state home hardening grant programs.
A hypothetical payback
Say your $2,400 premium includes a $1,200 wind and hail portion, and your insurer gives a 25% credit on that portion for a FORTIFIED Roof. The credit is $300 a year, or 12.5% of the whole premium. If the FORTIFIED features add $2,000 to the re-roof, premium savings repay that in about seven years, before counting avoided damage or a grant. The numbers are invented; use the roof and mitigation upgrade payback calculator with your quote.
Roof age also decides what a claim pays
The premium is half the story. An older roof is often written on an ACV roof endorsement or a roof surfacing payment schedule, which deducts depreciation permanently or pays a falling percentage of replacement cost as the roof ages. Ask for the premium with and without the endorsement; the cheaper policy may not be the better one. Since March 18, 2026, Fannie Mae's guide for one-to-four-unit loans says roofs must be insured but need not be insured on a replacement cost basis (Fannie Mae B7-3-02), so your lender will not insist on replacement cost for the roof. The dollar effect is worked out in Roof payment schedules and ACV roof endorsements and the roof claim payout estimator. Florida also lets insurers add a roof deductible of up to the lesser of 2% of Coverage A or 50% of the roof's replacement cost, with a premium credit; it does not apply to hurricane roof losses.
What to do
- Find out what the insurer has on file: roof year, material, last inspection date and any roof endorsement. Your declarations page and a call to your agent will show it.
- Correct the record. Send the permit, invoice and photos if the year or material is wrong.
- Before you replace the roof, ask the insurer in writing which materials and ratings earn a credit, what documentation it needs, whether the settlement terms revert to replacement cost, and how the new roof changes the premium.
- Get an inspection report if the roof is 15 years or older and you suspect it is better than its age suggests.
- After the work, send the paperwork and ask for the credit to apply at the next renewal, or sooner if the insurer allows a mid-term change.
- Shop. Roof factors differ by insurer, so an old roof priced harshly by one company can be acceptable at another. will insurance pay for a roof replacement? explains the claim side if a storm decides the timing.
Key takeaways
- Roof age is a banded rating factor that steps up at renewal, and it also determines whether a storm claim pays replacement cost, actual cash value or a schedule.
- Material sets the expected life, the age limit and the discounts available; asphalt shingles face the shortest limits.
- Class 4 and FORTIFIED credits are set by each insurer, usually apply only to the wind or hail portion of the premium, and vary widely.
- A new roof seldom repays itself through premium alone; its value is in staying on a standard policy and cutting loss risk.
- Check the roof year and material the insurer has on file, and get the credit and settlement terms in writing before paying for a replacement.