How long a roof lasts — and what its age decides.
Age is not just a countdown to replacement. It sets how much your insurer depreciates a claim, what a buyer will pay, and whether a repair is worth doing at all. Drop your address for a free AI-powered age estimate.
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- AI roof age & conditionOur AI reads satellite imagery — fading, streaking, granule loss — to estimate age.
- Material-by-material lifespanTypical service life for asphalt, tile, metal, and cedar shake.
- What the number decidesHow your age affects insurance depreciation, resale, and repair economics.
- Storm history overlayEvery NOAA hail and wind event within 10 miles of your address.
How long your roof should actually last, by material.
The material on your roof sets the whole schedule everything else on this page runs on. Two roofs installed the same year — one three-tab asphalt, one standing seam metal — aren't remotely on the same clock, and treating them as if they were is how a homeowner ends up replacing early, or riding a roof years past the point an insurer will still underwrite it.
| Material | Typical service life | What shortens it | What extends it |
|---|---|---|---|
| Architectural asphalt | 22-30 years | Intense UV/heat, poor attic ventilation, hail impacts, untreated algae or moss | Balanced ridge/soffit ventilation, prompt repairs, impact-resistant (Class 4) variants |
| Three-tab asphalt | 15-20 years | Same as architectural, but a thinner mat leaves less margin before it's gone | Ventilation and prompt repairs matter more here — there's less material to lose |
| Standing seam metal | 50-70 years | Failed sealant or flashing at penetrations; on steel, coating failure exposing the substrate to rust | Concealed fasteners avoid the exposed-gasket failure mode; re-coating once the factory finish chalks |
| Exposed-fastener metal | 40-50 years | Rubber washer cracking and screw backout, typically needing attention by 15-20 years | Scheduled re-screw or reseal passes before the washers fail outright |
| Clay or concrete tile | 50+ years | The underlayment beneath the tiles failing first, plus cracking from impact or foot traffic | Prompt replacement of cracked tiles, underlayment replaced on its own schedule |
| Cedar shake | 20-30 years | Trapped moisture, moss and fungal growth, lack of preservative treatment | Regular cleaning, fungicide/preservative treatment, good attic ventilation |
These are typical, real-world ranges under normal conditions, not the number printed on a warranty card — warranty terms are usually prorated after the first several years and assume ideal ventilation and installation, neither of which every roof gets. Climate does more to move a given roof up or down its range than almost anything else: intense UV and heat, frequent hail, and coastal salt air all pull the low end closer, while a shaded, well-ventilated roof in a mild climate tends to land near the top. Treat the range as a planning window, and use the surface signs further down this page to place your specific roof inside it.
What your roof's age actually decides.
Age isn't just a maintenance countdown. It's the number an insurance adjuster reaches for first, the line a buyer's agent points at during negotiation, and the deciding factor in whether a repair is worth doing at all.
Insurance depreciation: ACV vs. RCV
Most homeowners policies pay out one of two ways. A Replacement Cost Value (RCV) policy pays what it actually costs to replace your roof today, with age playing little or no role in the payout. An Actual Cash Value (ACV) policy pays replacement cost minus depreciation for age and wear — so the older the roof, the smaller the check, sometimes dramatically. A carrier applying a straight-line depreciation schedule against a roof rated for 25 years could reasonably knock a 15-year-old roof's payout down by roughly half before a cent is paid.
The mechanics vary enormously by carrier, by state, and by the specific policy language — some policies convert older roofs to ACV automatically once they pass an age threshold, others handle it differently by material entirely. Check your own declarations page rather than assuming; "depreciation" means something different on every policy.
Resale
An old roof rarely adds sale price on its own — buyers don't pay a premium for a new roof so much as they discount hard for an old one. Past a certain age, a roof becomes a line item a buyer's inspector flags, an appraiser notes, or a lender's insurer refuses to write a policy around, any of which can stall or reprice a deal. A newer roof's real value at sale is less about upside and more about removing an objection before it gets raised.
Repair-vs-replace economics
A repair on a young roof is usually straightforward money: patch the damage, extend the life you already had. On a roof already near the end of its material's typical range, the same repair is a different bet — you're spending money on a roof that may need full replacement within a few years regardless, and a contractor may not warranty a repair on a roof that old at all. Age is also part of what an insurer weighs when deciding whether a claim gets approved or treated as ordinary wear — which is part of why the repair-or-replace call gets harder, not easier, the older the roof gets.
Calendar age and effective age are not the same number.
Two roofs installed the same week, with the same shingle, can be in genuinely different places a decade later. The date on the permit is the calendar age. What a roofer, an adjuster or an appraiser responds to is the effective age — how much service life the roof has actually used up — and that is the number that drives money.
This matters practically. A 12-year-old roof that has weathered like a 20-year-old one gets treated like a 20-year-old one when a storm claim is scoped, and a 20-year-old roof in genuinely good condition is worth arguing about rather than conceding. Neither position is available to you unless you know which way your roof has drifted. These are the factors that pull the two apart, roughly in order of how much they move the needle:
- Attic ventilation — a deck that traps heat and moisture ages the covering above it faster than an identical roof that breathes
- Sun exposure by slope — a south or west-facing slope takes materially more UV than the north face of the same roof, which is why one slope routinely fails years ahead of the others
- Climate — sustained heat, hail frequency, freeze-thaw cycling and coastal salt each push a roof toward the bottom of its material's range, as covered in the table above
- Install quality — nails driven too high or overdriven, a missed starter course, or flashing detailed poorly will shorten a roof regardless of what was paid for the shingle
- Layers — a roof installed over an existing one runs hotter and gives an inspector less to work with, and it loads the deck beyond what a single layer assumes
- Storm history — hail bruising and wind-lifted tabs consume service life in an afternoon, and the effect compounds across events rather than healing
You cannot read effective age off a calendar, which is why condition assessment beats arithmetic every time — and why an inspection, or an estimate read from current imagery, tells you something a permit record cannot. Material matters here too: metal and tile move along this curve far more slowly, with their risk sitting in fastener washers, sealant and underlayment rather than the visible surface, so a 20-year-old metal roof and a 20-year-old asphalt roof are not comparable numbers at all.
Everything we know about roof age.
Four guides covering how to find your roof's age, how long each material actually lasts, and the ten signs that mean it's time to replace.
How Old Is My Roof?
Most homeowners have no idea when their roof was last replaced. Here are the five reliable ways to find out, ranked by how much you can trust each one — plus a free AI estimate that reads your roof from current satellite imagery.
READ GUIDE →Roof age · AsphaltHow Long Does an Asphalt Shingle Roof Last?
Manufacturers advertise 25-50 year warranties. Real-world lifespan runs well short of that on every grade. Here's what each shingle grade actually delivers, and the climate variables that determine where you land.
READ GUIDE →Roof age · MetalHow Long Does a Metal Roof Last?
Metal roofs outlast asphalt by a factor of two to four — but the lifespan range across metal types is enormous, from 40 years for cheap exposed-fastener steel to 100+ years for copper and zinc.
READ GUIDE →Roof age · End of life10 Signs Your Roof Needs Replacement
A roof rarely fails all at once. It tells you for years before the leak starts. These are the ten signs that mean you're on borrowed time, ranked by severity.
READ GUIDE →