Hail Damage to Your Roof: How to Spot It, Document It, and What to Do Next

After a hailstorm, the most expensive mistake a homeowner can make is assuming the roof is fine because nothing is leaking. Hail damage to a roof is often invisible from the ground and quiet for months — and then it isn’t. This is a plain-English guide to what hail actually does, how to check yours correctly, and how to make a calm, informed decision afterward. It comes from two people who’ve spent about three decades on Twin Cities roofs: master roofer Lewis May and master carpenter Josh Kujawa.

How hail damage to a roof actually happens

An asphalt shingle has a layer of small mineral granules on top. Those granules are the roof’s sunscreen — they shield the asphalt underneath from UV and weather. When hail strikes, two things can happen, and neither one has to leave an obvious hole:

• Granule loss. The impact knocks granules loose, exposing the asphalt. Exposed asphalt ages and dries out faster, which quietly shortens the life of the roof.
• Bruising and mat fracture. A hard enough stone can bruise the shingle and fracture the mat beneath the surface — a soft spot you often can’t see from a distance but can feel and document up close.

Two factors decide how much harm a storm does: size and hardness.

A bigger stone carries more energy, but hardness matters just as much. Clear hail is harder than white hail and tends to implode on impact, bruising the surface, while softer hail can bounce off. That’s why two storms with the “same” hail size can leave very different roofs behind.

Roof variables matter too. Age, the manufacturer, and how malleable or brittle the shingles have become all change the picture. Older, brittle, steep, or shaded roofs tend to take hail harder than newer, more flexible ones. There’s no single rule — which is exactly why a real inspection beats a guess.

How much hail does it take to damage your roof?

People assume it takes a dramatic, golf-ball storm to hurt a roof. Sometimes a smaller storm does it; sometimes a big one barely does. As a rule of thumb on the insurance side, most carriers look for roughly 6 to 10 hits within a 10-by-10-foot area (one “square”) before they’ll consider the slope damaged enough to claim.

Here’s how unpredictable that threshold is in practice. We’ve gone up on roofs we installed three years ago and found only a hit or two — not enough to claim. And we’ve gone up on a roof from 2019 we didn’t expect to find anything on, and there was enough damage to recommend calling the adjuster. The roof tells the truth; assumptions don’t.

Why you can’t trust a look from the ground

This is the part homeowners most need to hear: you cannot reliably see hail damage to a roof from the ground, and it’s tough to spot even with a drone. A trained eye can sometimes catch signs from below, but no honest roofer will declare your roof undamaged — or damaged — based on a look from the yard.

When we inspect, we go up with a ladder, find the bruised and granule-loss spots by hand and eye, and circle each one in chalk so it shows up clearly in the photographs. That documentation is what turns “I think there might be damage” into something you and your insurer can actually see.

So when someone tells you “I looked, everything seems fine,” the accurate version is: nothing’s obvious from down here. Your shingles can be compromised even when every vent and visible surface looks untouched.

Don’t forget the rest of the house

The roof is the headline, but hail leaves a trail of evidence around the property that’s easier to spot — and useful to document:

• Dented gutters and downspouts
• Dinged window screens, vents, and soft metals like flashing
• Marks or dents on the AC unit’s fins
• Cracked or pocked siding (vinyl, aluminum, wood, and fiber cement all show it differently)
• Shredded plants, stripped leaves, and damaged outdoor furniture

If you found dents in your gutters or your garden looks like it lost a fight, that’s a strong signal the roof deserves a closer look.

What to do first if you have a hail damaged roof, (and what not to do)

Do:

• Stay on the ground and stay safe. Don’t climb up to inspect your own roof.
• Take wide photos from the yard of any visible damage — gutters, screens, siding, the AC unit, landscaping.
• If you collected any hailstones, photograph them next to something for scale.
• Note the date and rough time of the storm. That “date of loss” matters later.

Don’t:

• Don’t climb on the roof.
• Don’t rush into a decision because a crew showed up in the neighborhood.
• Don’t assume you’re fine because it isn’t leaking — and don’t assume you’re doomed because your neighbor has damage.

How damage shows up over time

A roof can look okay in June and tell a different story by the next spring. Once hail knocks granules loose and bruises the mat, sun, heat, and Minnesota’s freeze-thaw cycles keep working on those weak spots. The first warning signs of trouble are usually around vents, pipe boots, skylights, and flashing, followed by interior clues — ceiling stains, attic moisture, granules collecting in the gutters. Even without an immediate leak, hail can shorten a roof’s usable life and complicate resale or future coverage. Catching it early keeps your options open.

Repair or replace? It depends — honestly

Not every hail-touched roof needs to be torn off tomorrow. If a roof has scattered hits but not enough to claim, replacement usually isn’t urgent. Targeted shingle repairs — going up and correctly replacing the affected shingles — are reasonable, ideally done when it’s not blazing hot out so the shingles separate and reseal correctly. It’s typically not critical (it won’t leak next week), but it’s worth doing in time.

When damage is widespread, replacement becomes the sound call. If you’re replacing, it’s worth asking about Class 4 (impact-resistant) shingles. They hold up to hail far better than standard Class 3 products, and many insurers offer a premium discount for installing them. With Minnesota’s hail seasons — and with insurers tightening coverage — that upgrade increasingly pays for itself.

We’ll walk you through the trade-offs in plain terms; we won’t push you toward a tear-off you don’t need. We work primarily with Owens Corning, GAF, and CertainTeed shingles, and we’ll match the product to your home and goals rather than to a sales quota.

How to choose a roofer (and spot a storm chaser)

After a storm, the door-knocks, texts, and flyers start. A few honest filters:

• Choose local. A contractor based here — and reachable here next year — is in a different category than an out-of-town crew that registered for the season. With 100 roofs installed, some warranty issue eventually comes up; you want someone who keeps showing up to make it right, whether the cause is the roof, the insulation, attic condensation, or a bath fan venting into the attic.
• Be wary of door-knockers. It’s the 21st century; a reputable company doesn’t need to send young crews down a list of recently hit streets to bother neighborhoods. What they’re willing to do to get the job tells you something.
• Ask for licensing, insurance, and references. A legitimate Minnesota roofer will share them without hesitation.
• Watch the insurance talk. Anyone offering to “cover” or “waive” your deductible is steering you toward something that isn’t in your interest — and isn’t legal in Minnesota. Walk away.

A trustworthy inspection is a serious conversation with someone who actually goes up on the roof, explains what they found, and is honest about when you shouldn’t file a claim — so you can make your own informed decision based on your situation and your risk tolerance.

The bottom line

Hail damage to a roof is real, it’s often invisible from the ground, and it doesn’t wait for a leak to start costing you. The right response isn’t panic and it isn’t denial — it’s due diligence. Have someone who knows roofs take a real look, get clear documentation either way, and decide from there.

Not sure whether the last storm touched your roof? Right Away Construction offers a free, no-pressure roof inspection across the Twin Cities. We go up with a ladder, document what we find, circle it in chalk for the photos, and tell you the truth — including when you don’t need a new roof. Call 612-255-9605 or visit rightawayco.com. Local crews, start to finish. MN #BC630708. Done the right way. Right away.

Call 612-255-9605 or visit rightawayco.com. Local crews, start to finish. MN #BC630708. Done the right way. Right away.

Live through a recent storm? See Hailstorm in Saint Anthony: Here’s What Really Happened. Thinking about a claim? Read Filing a Hail Damage Roof Insurance Claim in Minnesota.