After a hailstorm rolls through, most homeowners look up at their roof, see nothing obviously wrong, and assume everything is fine. That assumption costs people money. Hail damage is often invisible from the ground and only becomes expensive when it's ignored long enough to let water in.
What Hail Does to an Asphalt Roof
Asphalt shingles have a layer of small granules embedded in the surface. These granules protect the underlying asphalt mat from UV degradation and shed water. When hail strikes, it knocks granules loose in a circular pattern — leaving exposed, darkened asphalt underneath.
The technical term is granule displacement. The dent itself may be shallow, but the damage is functional: once the asphalt mat is exposed, it oxidizes and dries out. Within a few years, that spot can crack and allow water to penetrate.
Signs to Look For — Ground Level First
Before climbing onto your roof, do a ground-level walk-around. You're looking for:
- Granules in gutters and downspout discharge areas. After normal rain, a few granules in gutters is expected. After a hailstorm, you may find cups worth — dark, sandy debris that looks like coarse coffee grounds.
- Dents in aluminum gutters or fascia. Aluminum dents cleanly from hail. Run your hand along the gutter face — you'll feel the impacts before you see them.
- Dings on AC condenser fins or siding. If your AC unit took hits, your roof almost certainly did too.
- Cracked window screens or chipped paint on wood trim. These are soft-target indicators that confirm hail fell in your yard.
On the Roof: What a Licensed Inspector Checks
If ground-level signs point to a storm event, a professional inspector will look for:
| Location | What Hail Damage Looks Like |
|---|---|
| Asphalt shingles | Soft, dark circular spots 1-3 cm wide; granule loss with exposed mat beneath |
| Metal flashing | Sharp, clean circular dings with raised edges |
| Roof vents (plastic) | Cracking, spiderweb fractures around impact points |
| Ridge cap shingles | Splits, cracks, or bruising at the ridge line (exposed to full hail trajectory) |
| Skylights | Impact pits in glass or cracked seals around the frame |
How to Tell Hail Damage from Normal Aging
This is where many homeowners -- and some adjusters -- get confused. Normal shingle aging causes uniform granule loss across the whole surface, and the exposed areas look sun-bleached. Hail damage leaves random, circular granule-loss spots with a soft, bruised feel when you press them. The pattern matters: aging is distributed, hail is scattered.
If your shingles have impact rating UL 2218 Class 4 (the highest), they're designed to resist denting from 2-inch hail -- but they're not immune to granule loss from repeated smaller impacts over multiple seasons.
What to Do If You Find Damage
- Document with photos and video -- timestamp everything.
- Check your policy's storm damage window -- most insurers require you to report within 1 year of the event; some states extend this.
- Get a licensed roofer's inspection report before calling your insurer -- this protects you if an adjuster disputes the damage.
- Do not let door-to-door contractors sign an Assignment of Benefits (AOB) on your behalf -- this transfers your claim rights to them, not you.
Frequently Asked Questions
Can hail damage a brand-new roof?
Yes. Even recently installed shingles can suffer granule loss from large or dense hail. Age helps determine vulnerability but does not guarantee immunity.
How big does hail need to be to damage a roof?
Asphalt shingles can show granule loss from hailstones as small as 1 inch. Metal roofs typically require 1.5 inches or larger to show visible denting. Actual damage depends on hail velocity and density, not just size.
Will my insurance cover hail damage?
Most standard homeowner policies cover hail as a named peril. Check your policy for ACV (actual cash value) vs. RCV (replacement cost value) -- ACV policies deduct depreciation, which can significantly reduce your payout.
Can I inspect my own roof?
You can check gutters and ground-level surfaces yourself safely. Walking on the roof carries fall risk and can further dislodge damaged shingles. A licensed inspector has the training and insurance to do it properly.
What if the hailstorm happened months ago?
Have an inspection anyway. Hail damage does not heal, and documentation of existing damage is still valuable -- both for an insurance claim and for understanding your roof's current condition before the next storm season.
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