Short answer: Metal and asphalt both come in impact-resistant versions, and neither is hail-proof. The real difference is how they fail: asphalt fractures and sheds granules, metal usually just dents. Which matters more depends on your roof, your budget, and — crucially — what your insurance policy says about cosmetic damage.
Somewhere between the second hailstorm and the third insurance claim, most Front-Range homeowners ask the same question: should I just put a metal roof on it? It's a fair question, and it deserves a real answer rather than a sales pitch for whichever product the roofer happens to stock. We install both asphalt and standing-seam metal, so here's the honest comparison.
Both come in impact-resistant versions. Neither is hail-proof.
"Class 4" is a rating under UL 2218, an impact test in which a two-inch steel ball is dropped at the kinetic-energy equivalent of a hailstone. A product passes if the back of the material shows no tearing, fracturing, cracking, or rupturing — but cosmetic dents and granule loss are allowed under the standard. So Class 4 is a laboratory impact-resistance rating, not a promise of invulnerability, and it's available in both asphalt shingles and metal panels. Anyone telling you a metal roof "can't be damaged by hail" is selling, not explaining. For what the rating does and doesn't cover, see our Class 4 shingles explainer.
The lab data on asphalt is more sobering than the label suggests.
The Insurance Institute for Business & Home Safety (IBHS) tests real, commercially available asphalt shingles with laboratory-made hailstones — 1.5-inch and 2-inch — rather than steel balls, precisely because older methods don't reproduce real-world damage and nearly every product ends up with the same label. The results are humbling: in its 2025 impact-resistant shingle ratings, its most expansive to date, IBHS tested 24 products and rated only 18 "Good" and 5 "Marginal" — not one earned an overall "Excellent." Every one of them already carries an impact-resistant label. So "Class 4 asphalt" is a floor, not a guarantee, and which specific shingle you install genuinely matters. Ask for the IBHS rating of the exact product, not just its class.
Metal's advantage is how it fails, not whether it fails.
Under large hail, a metal panel's typical failure mode is denting: the panel deforms but keeps shedding water. An asphalt shingle's typical failure mode is a bruise or fracture in the mat, which loses granules, exposes the asphalt underneath to UV, and shortens the roof's remaining life whether or not it leaks today. That's the real case for metal in a hail belt — not that it survives untouched, but that a struck metal roof is often still doing its job while a struck asphalt roof is quietly aging out.
Longevity follows the same logic. The Metal Construction Association's service-life assessment of unpainted Galvalume (55% aluminum-zinc-coated steel) standing-seam roof systems concluded an expected service life in excess of 60 years for a system built today to best practices — against the roughly 20 to 30 years a typical asphalt roof gets in Colorado's altitude, UV, and freeze-thaw cycling. Our roof-lifespan post walks through why Front-Range roofs age faster than the label promises.
The catch nobody mentions: cosmetic-damage exclusions.
Here is the part left out of most metal-roof pitches, and it's the single most important thing to check before buying one. Some homeowners policies carry a cosmetic-damage exclusion endorsement — language stating that damage which changes appearance but does not impair the roof's function as a water barrier is not covered. Dents in a metal panel are exactly the kind of damage such an endorsement is written to exclude.
Read that together with the point above and the tension is obvious: metal's great virtue — that it dents instead of fracturing — can be the very thing your policy declines to pay for. Whether your policy carries that endorsement is policy-specific; it's not universal, and we can't answer it for you.
What to actually do: before you commit to metal, pull your declarations page and ask your agent, in writing, three questions. Does my policy contain a cosmetic-damage exclusion? Is my roof settled at replacement cost or actual cash value? And do you offer an impact-resistant-roof discount — does metal qualify? The Colorado Division of Insurance's homeowners insurance toolkit is a neutral place to start.
What the money side looks like (and what we won't pretend to know).
Metal costs meaningfully more up front than asphalt, and how much more depends on panel type, gauge, coating, roof complexity, and what's underneath. We're not going to publish a per-square number we can't stand behind for your specific roof — you'll get a real written figure from an inspection, not a blog post.
What we can point to is the state's own data. The Colorado Division of Insurance has found that hail is the number-one cost driver of homeowners insurance in Colorado, accounting for 26% to 54% of the average annual premium, and its analysis of data from 20 carriers indicates hail mitigation (fortified roofs) can save consumers an average of $82 to $387 per year across the 11 counties studied. The DOI advises homeowners replacing a roof to ask their insurer what premium discounts or future deductible savings may be available for replacing with hail-resistant material. Discounts vary by carrier, policy, and property — confirm with your insurer, because anyone quoting you a specific percentage is guessing.
So which one should you put on your house?
Honest answer: for most Front-Range homes, a well-chosen impact-resistant asphalt shingle is the right call. It's what the overwhelming majority of the housing stock uses, the price is proportionate to the risk, and a strong IBHS-rated product handles typical Colorado hail well. Metal earns its premium when you plan to stay in the home for decades, you want the longest service life available, your roof geometry suits panels, and — this is the gate — your insurance policy doesn't punish cosmetic denting.
How to check where your roof stands right now
Hail exposure isn't hypothetical here. NOAA's Storm Events Database has logged 242 hail reports in Douglas County since 2000, peaking in June, July, and August, with the largest at 3 inches — you can read the county-by-county record on our Hail History page. But a nearby report is not proof your own roof was hit; the only definitive check is a roof-level inspection. We install both asphalt and standing-seam metal, we don't earn more by steering you toward either one, and if your roof is fine we'll say so. Book a free, no-pressure inspection, or read how we approach a full roof replacement built for Colorado weather.