Direct answer
After a hailstorm, look for patterns—not just one suspicious mark.
Hail can bruise, dent, tear, or displace granules on asphalt shingles, but not every dark spot or missing granule is storm damage. The safest homeowner check is from the ground: document the storm, look for damage to soft metals and exterior components, and arrange a roof inspection when hail was large, wind-driven, or accompanied by visible damage elsewhere on the property.
Minnesota homeowners in Burnsville, Lakeville, Apple Valley, Eagan, Minneapolis, Saint Paul, Northfield and surrounding communities see thunderstorms that can produce hail over a wide range of sizes and hardness. Two homes on the same street can come through the same storm differently because roof age, shingle type, roof slope, hailstone strength, wind direction, tree cover and previous wear all change how impacts are absorbed.
What hail can do to an asphalt shingle
The Insurance Institute for Business & Home Safety (IBHS) studies how natural and laboratory-made hail affects roofing. Its research describes three common asphalt-shingle damage modes: denting the shingle, breaching or tearing the material, and displacing surface granules. The severity of those effects varies with the hailstone and the shingle. Larger hail generally carries more impact energy, but hardness, density, impact angle and wind also matter.
That distinction matters because a roof can look mostly normal from the driveway while still having localized impacts, and the reverse is also true: a weathered shingle can have ordinary granule loss that looks dramatic in close-up without being caused by a single storm. A credible inspection looks for a consistent story across the roof and related exterior surfaces rather than declaring every blemish a hail hit.
Signs you can check safely from the ground
Start with gutters, downspouts and soft metal
Metal gutter faces, downspouts, roof vents and other relatively soft surfaces can preserve impact marks that are easier to see than marks on shingles. Dents do not prove that the roof covering is functionally damaged, but they can confirm that hail struck the property and help show the direction and concentration of the storm.
Look for fresh debris
After a severe storm, check patios and driveways for unusually heavy accumulations of roofing granules, pieces of shingle, broken branches or damaged screens. Granules naturally shed over time, so context matters. A sudden amount immediately after a storm is more meaningful than a few granules that have slowly collected in a gutter for months.
Compare all sides of the house
Wind-driven hail is rarely distributed perfectly. One roof slope, one side of the siding, or one bank of windows may take more impact than the opposite side. Photos from several directions are more useful than zooming in on a single mark.
Why climbing onto the roof is usually a bad homeowner test
A sloped roof can be dangerous even when dry. After hail, shingles may be wet, granules may be loose, gutters may be damaged and tree debris may create unstable footing. Walking the roof can also scuff softened or aged shingles and create new marks that complicate the inspection.
Instead, photograph what you can from the ground and note the date and approximate time of the storm. If you have doorbell-camera footage or photos of hailstones next to a ruler after the storm has safely passed, keep those records. The National Weather Service also maintains storm information that can help confirm whether severe hail or wind was reported in the region, although a report nearby does not prove what happened at a specific house.
What a professional asphalt-shingle inspection should evaluate
A useful inspection is broader than counting circles on shingles. The roofer should look at the field shingles, edges, ridges, valleys, flashing, vents, penetrations, gutters and any locations where prior wear could be confused with impact. On asphalt shingles, the inspector is looking for changes that affect the material—not merely cosmetic variation.
Questions include: Is the shingle surface fractured or only scuffed? Is there a bruise in the asphalt layer? Are granules displaced around a defined impact? Is the mat exposed? Are there tears or cracks? Are impacts concentrated on storm-facing slopes? Do gutters or vents show a compatible pattern? Is the roof already brittle from age?
Hail damage is not the same as ordinary aging
Asphalt shingles lose granules gradually as they weather. Foot traffic, tree contact, manufacturing variation, installation damage and previous storms can all leave marks. Older shingles may also have exposed asphalt, cracking or edge wear unrelated to the most recent thunderstorm.
IBHS testing is useful here because it focuses on how shingles respond to controlled impact rather than assuming that every visible mark has the same significance. Its hail-impact program uses laboratory-manufactured hailstones designed to reproduce important properties of natural hail. The research shows that both the hailstone and the roofing product affect the damage outcome.
What impact-resistant shingle ratings can and cannot tell you
Impact-resistant shingles can reduce vulnerability, but the label should not be interpreted as “hail proof.” IBHS developed a research-based impact-resistance test for asphalt shingles because standardized tests and product labels do not always capture all of the ways real hail behaves. Their testing compares commercially available products under repeatable conditions.
For a homeowner replacing a roof in hail-prone Minnesota, the practical question is not whether a shingle can guarantee zero storm damage. It is whether a product has credible performance data, whether it is appropriate for the home and budget, and whether it is installed correctly as part of a complete roof system.
When the roof needs urgent attention
Move faster if you see missing shingles, torn tabs, exposed roof deck, active interior water, damaged flashing, a puncture near a vent or skylight, or tree impact. Severe hail may occur with strong wind, and the combination can create openings that allow wind-driven rain into the roof assembly.
If the storm has passed but water is entering the home, protect belongings and contain interior water where practical. If water is near electrical fixtures, use extra caution and involve an appropriate professional. Do not climb onto a wet or storm-damaged roof to place a tarp unless you are trained and equipped to do so safely.
Repair versus replacement after hail
Localized damage on an otherwise serviceable roof may be repairable. Widespread functional damage, extensive brittleness, repeated prior repairs, or a roof already near the end of useful service may make replacement more practical. Matching also matters: a technically possible patch may be visually obvious if the existing shingles are faded or discontinued.
A good decision should separate three questions. First, what did this storm actually damage? Second, what condition was the roof in before the storm? Third, what repair will restore the roof's ability to shed water reliably? Those questions are more useful than assuming a particular outcome before the roof is inspected.
What not to do after a hailstorm
Do not sign a major contract solely because someone says your neighborhood “must” have roof damage. Do not accept an inspection conclusion that cannot be explained in plain language. Do not pressure-wash the roof to “see the marks”; high-pressure cleaning can damage asphalt shingles. And do not let anyone create or enlarge test damage on your roof.
It is reasonable to ask an inspector to show you photographs of the conditions they found, explain whether each condition is cosmetic or functional, and distinguish storm impacts from age-related wear.
Minnesota-specific considerations
Minnesota roofs already manage snow, freeze-thaw cycles and large seasonal temperature swings. A hail-damaged shingle may then face months of additional weather exposure. That is one reason it is worth addressing genuine functional damage rather than waiting indefinitely for a leak to appear.
Homeowners in the south metro can compare the condition of their roof with the type of work Solaris completes through the Work Near You hub, or review asphalt-shingle roofing services. For local context, see the Burnsville, Lakeville, Apple Valley, and Eagan service pages.
Bottom line
After hail, document first and diagnose second. Damage is most credible when the pattern across shingles and other exterior surfaces agrees with the storm. If hail was significant or you see torn, missing or breached material, arrange a professional inspection. If the roof is intact, there is no benefit to manufacturing urgency that the condition does not support.
For more homeowner guidance, visit the Solaris Advice hub.
Research & Sources
This article uses public research and technical guidance to explain the issue in homeowner-friendly language. Product conditions and individual homes vary, so site-specific evaluation still matters.
- Insurance Institute for Business & Home Safety — Relative Impact Resistance of Asphalt Shingles. Explains IBHS hail-impact testing and how asphalt shingles are evaluated under controlled impact.
- Insurance Institute for Business & Home Safety — Natural Weathering and Hazard Exposure. Describes hailstone impact behavior and observed asphalt-shingle damage modes.
- National Weather Service. Primary public weather source for severe-weather information and local storm reporting.
General homeowner education only. It is not a substitute for a site-specific roofing, structural, electrical, moisture, or insurance evaluation.