How long does a roof last?
Updated August 2026
A roof lasts 20–50 years, and the number rides almost entirely on the material. Asphalt shingles, on roughly 80% of American homes, run 15–30 years; metal lasts 40–70; clay or concrete tile reaches 50–100; wood shake goes 20–40. Underneath the material choice, three things decide whether a roof hits the top or bottom of its range: attic ventilation that keeps the underside cool and dry, the climate beating on it, and the quality of the install and flashing. A poorly vented attic can cook 5 to 10 years off any roof.
Lifespan by type and situation
| Type or situation | Typical lifespan | Why |
|---|---|---|
| Asphalt shingle (3-tab) | 15–20 years | The economy standard; the shortest-lived common roof |
| Asphalt shingle (architectural) | 25–30 years | Thicker, layered shingles that resist wind and wear better |
| Metal | 40–70 years | Standing-seam at the top; screw-down panels shorter |
| Clay or concrete tile | 50–100 years | The tile outlives the underlayment, which is replaced at 20–30 |
| Wood shake | 20–40 years | Handsome but demanding; needs treatment and a dry climate |
| Slate | 75–150 years | Effectively a lifetime roof, at a premium price and weight |
| Poor attic ventilation | Cut 5–10 years | Trapped heat and moisture age shingles and rot the deck from below |
Signs yours is near the end
- Shingles that are curling, cupping, cracking, or lying loose after a storm
- Bald spots where the protective granules have washed off, often collecting in gutters
- Daylight, water stains, or damp insulation visible in the attic
- Sagging rooflines or a spongy deck, a sign of moisture damage underneath
- Cracked or lifting flashing around chimneys, valleys, vents, and skylights
- A roof that is simply near or past the rated life for its material
How to add years
The cheapest years you can buy come from ventilation and early leak repair, not from a fancier material. A properly vented attic keeps the roof deck cool in summer and dry in winter, which is what lets shingles reach their rated life instead of baking brittle years early. Keep gutters and valleys clear so water sheds fast, trim branches that scrape and drop debris, and re-seal or replace flashing when it lifts, because most roof leaks start at a joint, not in the field of shingles. A once-a-year look, especially after a big storm, catches a lifted shingle or a cracked boot while it is a $200 fix, and the routine is on the roof maintenance checklist. Since the material sets the ceiling on all of this, it is worth reading the specifics for a metal roof and an asphalt shingle roof before you re-roof.
What it costs to replace: plan on $8,000–20,000 for most homes. Replacing on your own schedule, before it fails, is almost always cheaper than the emergency version. The home maintenance cost calculator helps you set the money aside before it comes due.
OnOtto tracks your roof inspections age and service history, and warns you before end of life instead of after the flood.
Track your home's systems, free for 30 daysFrequently asked questions
How do I know if my roof needs replacing or just repair?
Age and pattern tell you. If an asphalt roof is past 20 years and you see widespread curling, cracking, and bald granule loss across the whole surface, it is worn out and a repair just delays the inevitable. Localized damage on a younger roof, a few blown-off shingles, one leaky flashing, or a single valley, is a repair. The tiebreaker is the deck: if the plywood underneath is soft, sagging, or water-stained across large areas, you replace. A roofer's inspection settles it, and many offer it free.
Does attic ventilation really affect how long a roof lasts?
More than most homeowners realize. A poorly vented attic traps heat that can top 150 degrees in summer, and that heat bakes the oils out of shingles from below, aging them 5 to 10 years early. In winter, trapped moisture condenses on the underside of the deck and rots the plywood, and it feeds ice dams at the eaves. Balanced intake and exhaust vents keep the deck cool and dry. It is one of the cheapest things you can fix, and it protects the single most expensive surface on the house.
How long does a roof last in a hot, sunny climate?
Usually toward the low end of its range. Constant UV and heat are hard on asphalt shingles, drying them out and cracking them, so a shingle roof that might reach 25 years in a mild climate can be worn out in 15 to 20 across the Southwest. Dark colors run hotter and age faster. Tile, clay, and metal handle sun far better, which is why they dominate hot regions. Good attic ventilation and lighter, reflective shingle colors help asphalt survive longer where the sun is relentless.