How Long Does a Metal Roof Last vs. Shingles?
Short answer: a properly installed steel or aluminum metal roof lasts 40 to 70 years. Copper and zinc roofs regularly pass 100. An asphalt shingle roof lasts 15 to 30 years depending on the grade. In practical terms, a metal roof will usually outlast two to three shingle roofs on the same house.
The Metal Roofing Alliance, the industry’s trade association, puts it the same way: expect metal to last at least two to three times longer than conventional roofing. Here is why that is true, where the numbers get fuzzy, and what it means for a home in the Chicago area.
Lifespan comparison at a glance
| Roof type | Expected lifespan | What usually fails first |
| Asphalt 3-tab shingles | 15–20 years | Granule loss, cracking, wind uplift |
| Architectural shingles | 25–30 years | Same, slower |
| Premium / impact-rated shingles | 30–40 years | Same, slower still |
| Exposed-fastener (screw-down) metal | 25–40 years | Screw washers dry out and leak |
| Standing-seam steel (Galvalume or galvanized) | 40–70 years | Paint finish fades; panels remain sound |
| Aluminum standing seam | 50+ years | Finish; aluminum does not rust |
| Copper | 70–100+ years | Solder joints and fasteners |
| Zinc | 80–100+ years | Fasteners; the metal self-heals scratches |
These ranges match what home inspectors use as a reference in the InterNACHI life expectancy chart.
Why metal lasts so much longer
Shingles are organic; metal is not
An asphalt shingle is a fiberglass mat soaked in asphalt and coated with mineral granules. The asphalt begins drying out and losing flexibility the day it is exposed to sunlight. UV breaks it down, heat accelerates the process, and once the granules go, the mat is unprotected. There is no way to stop this; you can only slow it with good ventilation and shade.
Steel panels do not degrade that way. The base metal is protected by a metallic coating (zinc for galvanized, zinc-aluminum for Galvalume) and then by a factory-baked paint finish. The paint may chalk and fade after 30 years, but the panel underneath is still structurally sound and can often be recoated rather than replaced.
Fewer seams, fewer failure points
A shingle roof has thousands of individual pieces, each with a seal strip that can lift in high wind. A standing-seam metal roof has long panels with raised, interlocked seams and no exposed fasteners in the field of the roof. Wind has very little to grab.
The exception is screw-down metal roofing, which relies on thousands of exposed screws with rubber washers. Those washers age in 15 to 20 years and become leak points. If you are choosing metal for longevity, standing seam is the version that delivers it.
Weight and thermal movement
Metal expands and contracts with temperature, and Chicago sees swings from below zero to over 95°F. Standing-seam systems are designed with clips that let the panels move. A poorly designed metal roof, or one installed without allowing for movement, will loosen fasteners and oil-can (ripple) over time. Installation matters even more with metal than with shingles.
What shortens a metal roof’s life
Metal is not indestructible. The things that take years off it:
- Wrong metal for the environment. Uncoated or galvanized-only steel near road salt or industrial pollution can corrode at cut edges.
- Dissimilar metals in contact. Copper flashing touching steel panels, or aluminum panels fastened with steel screws, sets up galvanic corrosion.
- Trapped moisture underneath. Metal roofs need a proper underlayment and ventilation like any other roof. Condensation on the underside of panels is a real issue in poorly vented attics.
- Foot traffic in the wrong places. Walking on the flat of a panel instead of near a seam can dent it and break the finish.
- Hail. Large hail can dent metal. Dents are usually cosmetic on steel and do not affect water shedding, but many insurance policies exclude cosmetic damage on metal roofs, which is worth knowing before you buy. We cover this in Does Homeowners Insurance Cover Roof Leaks?
- Cheap paint systems. Polyester finishes chalk in 10 to 15 years. PVDF (Kynar-type) finishes typically carry 30- to 40-year warranties and are the reason a metal roof still looks good at year 40.
What shortens a shingle roof’s life
We covered this in depth in How Long Does a Roof Really Last?, but the short list is heat from poor attic ventilation, ice dams, hail, wind, and installation shortcuts. The last one is the most common reason a “30-year” shingle roof gets replaced at 20.
Newer shingle products narrow the gap somewhat. Class 4 impact-rated shingles hold up far better in hail country, and some premium lines are rated for 40-plus years. But even the best shingle is still an asphalt product with the same underlying aging process.
Metal vs. shingles in Chicago winters specifically
Snow. Snow slides off metal roofs, which is good for load and bad for anything below the eaves. Snow guards above doorways, walkways, and gutters are standard practice on metal roofs in northern Illinois. Shingle roofs hold snow, which is gentler on gutters but adds weight and feeds ice dams.
Ice dams. Ice dams form on both roof types when attic heat melts snow that refreezes at the cold eave. Metal’s smoother surface means less ice adheres and water backs up less easily, but a metal roof over a poorly insulated, poorly vented attic will still build ice. The fix is the same for both: air-seal and insulate the attic floor, ventilate the attic, and install ice-and-water barrier at the eaves.
Freeze-thaw. Repeated freeze-thaw cycles are brutal on shingle seal strips and on the asphalt itself. Metal is unaffected by it.
Wind. Standing-seam metal is rated for high wind uplift. Three-tab shingles are the most vulnerable roof type in a Midwest thunderstorm, and architectural shingles fall in between.
Maintenance: what each roof asks of you
Shingle roof: inspection every two to three years and after major storms, gutter cleaning, moss treatment if shaded, replacement of pipe boots and sealant around 10 to 15 years, and periodic repair of lifted or lost shingles.
Metal roof: annual visual check for loose fasteners or debris in valleys, keeping gutters clear, keeping branches off the surface, and replacing sealant at penetrations every 15 to 20 years. Standing-seam roofs need very little else. Screw-down roofs need fastener replacement around year 15 to 20.
In both cases, the roof edge, flashings, and penetrations are where leaks start, not the field of the roof. Keeping gutters clear matters for both.
Which one is right for your house?
Choose metal if:
- You plan to stay in the home 15+ years and want to stop thinking about the roof
- Your roof has a low pitch (2:12 to 4:12) where shingles perform poorly
- You want maximum wind and fire resistance
- You are willing to pay more up front for a longer service life
Choose shingles if:
- You are selling within 5 to 10 years
- You want the widest range of styles and the easiest future repairs
- Your roof has many dormers, valleys, and penetrations that make metal panel work expensive and detail-heavy
- You are in an HOA that restricts metal
Either way, the installer is the variable that decides whether you get the top or bottom of the lifespan range. Our post on what to expect during a roof replacement explains what a properly done job looks like from start to finish.
The bottom line
A standing-seam metal roof lasts 40 to 70 years; a shingle roof lasts 15 to 30. Over the life of a house, that is one metal roof versus two or three shingle roofs, plus the tear-off, disposal, and disruption each time. Metal is not the right answer for every home or budget, but for longevity the numbers are not close.
JJ Roofing Construction Enterprises installs both shingle and metal roofing across the Chicago area, including Northbrook, Lombard, and Bensenville. Take a look at completed projects in our gallery, or contact us if you would like a recommendation for your specific roof.