5 Signs of Hail Damage on Your Roof You Can't See
We get the call every spring and summer in Southeast Michigan: "A storm just came through with golf ball-sized hail. Should I be worried about my roof?"
Here's the truth most homeowners don't realize — the worst hail damage isn't the stuff you can see from your driveway. It's the hidden compromises happening at the shingle level, the kind that shorten your roof's lifespan by years and create slow leaks you won't notice until water stains appear on your ceiling.
After 35 years of Detroit roofing services and hundreds of insurance claims across Macomb, Oakland, and St. Clair counties, we've learned exactly what to look for. This isn't about selling you a new roof — it's about helping you document legitimate damage before your insurance claim window closes.
Let's walk through the five signs of hail damage on your roof you can't see from the ground, why they matter, and what to do if you find them.
Sign #1: Granule Loss on Asphalt Shingles
The ceramic granules on the surface of asphalt shingles aren't decorative — they're the primary defense against UV radiation, heat, and impact. When hail strikes a shingle, it doesn't always crack the surface. Instead, it knocks loose clusters of these granules, exposing the asphalt mat underneath.
From ground level, this looks like nothing. Up close on the roof, you'll see bare spots, often circular or irregular in shape, where the black asphalt backing shows through. These spots are now vulnerable to accelerated weathering.
In Michigan's climate, with freeze-thaw cycles running from November through April, exposed asphalt deteriorates fast. The UV exposure breaks down the petroleum-based binder, the mat becomes brittle, and within a few seasons, you're dealing with cracked, curling shingles that leak.
What to look for: Check your gutters and downspouts after a hailstorm. If you see an unusual accumulation of granules — they look like coarse sand, often dark gray or the color of your shingles — that's a red flag. Normal granule loss happens gradually over 15-20 years. Sudden accumulation after a storm means impact damage.
We see this constantly on homes in Sterling Heights and Warren with architectural shingles from CertainTeed, GAF, or Owens Corning. The shingles look fine from the street, but when we're up there documenting for an insurance claim, we're finding dozens of impact points per square.
Sign #2: Bruising and Mat Damage You Can't See
This is where it gets technical, and where most homeowners miss the damage entirely.
An asphalt shingle is a layered composite: fiberglass mat at the core, asphalt coating for waterproofing, and granules on top. When hail hits hard enough, it compresses the asphalt layer without necessarily breaking through the granule surface. This creates what we call "bruising" — soft spots in the shingle that compromise its structural integrity.
You can't see bruising from the ground. Even from a ladder, it's subtle. But if you press gently on the shingle surface and feel a spongy give, or if the shingle feels softer in certain spots compared to others, that's mat damage.
Why does this matter? Because bruised shingles lose their ability to shed water effectively. The compressed areas create micro-depressions where water can pool. In Michigan winters, that water freezes, expands, and accelerates cracking. By the time you notice a leak, the damage has spread to multiple shingles and possibly the underlayment.
This type of damage is especially common after storms with hail larger than 1 inch in diameter. We documented this extensively after the severe storms that hit Oakland County in recent years, where homeowners had no visible damage but failed roofs within 3-4 years.
Sign #3: Fractured Fiberglass Mat
The fiberglass mat is the skeleton of your shingle. When hail impact is severe enough, it can fracture this mat without creating an obvious surface crack. Think of it like a hairline fracture in a bone — the structure is compromised, but it's not immediately visible.
Fractured mats are nearly impossible to spot without close inspection, and even then, you're often looking for indirect signs: slight buckling, a barely perceptible crease, or a shingle that doesn't lie flat the way its neighbors do.
The real problem shows up later. A fractured mat can't maintain the shingle's waterproof seal. Wind-driven rain finds its way through the fracture, especially during Michigan's spring storms when we get heavy, sustained rainfall. Water infiltrates the underlayment, then the roof deck, then your attic — and by the time you see the ceiling stain in your bedroom, you're looking at a multi-thousand-dollar repair that goes way beyond shingles.
This is one of the reasons we recommend professional roof inspection after any significant hail event. Our crews are trained to spot these fractures by flexing shingles slightly (never enough to cause damage) and looking for resistance patterns that indicate internal compromise.
Insurance note: Many adjusters will miss fractured mats during their initial inspection. Having documentation from a CertainTeed Master Shingle Applicator — like our team at NEXT Exteriors — carries weight when you're making the case for coverage.
Sign #4: Damaged Roof Penetrations and Flashing
Hail doesn't just hit shingles. It hits everything: plumbing vents, exhaust pipes, chimney flashing, skylight frames, ridge vents.
These penetrations are the most vulnerable points on your roof because they're where different materials meet — metal flashing against asphalt shingles, rubber boots around PVC pipes, aluminum caps on ridge vents. Hail impact can dent metal flashing, crack rubber boots, or separate sealant joints.
From the ground, you see nothing. From the roof, we're finding:
- Dented or creased metal flashing around chimneys, which creates gaps where water can enter
- Cracked rubber boots on plumbing vents, which let water run straight down into your attic
- Compromised sealant around skylight frames, leading to leaks that homeowners assume are skylight defects
- Damaged ridge vent caps, which reduce attic ventilation and contribute to ice dam formation in winter
We see this constantly in homes across Royal Oak and Grosse Pointe Farms, especially on older roofs where the flashing and boots were already nearing the end of their service life. The hail just accelerates the failure.
This is also where attic insulation and ventilation become part of the conversation. If hail damages your ridge vents and you don't catch it, your attic ventilation suffers. Poor ventilation means heat buildup in summer and moisture accumulation in winter — both of which shorten your roof's lifespan and drive up energy costs.
Sign #5: Gutter and Downspout Damage as a Diagnostic Tool
Here's something most homeowners don't realize: your gutters and downspouts are the best diagnostic tool for assessing hail severity.
If hail was large and forceful enough to damage your roof, it hit your gutters too. And unlike shingles, gutters show impact damage clearly — dents, dings, paint chips, and deformation.
When we're called out for a hail damage inspection, the first thing we do is walk the perimeter and look at the gutters. If we're seeing quarter-sized dents on the gutter faces, we know the roof took similar or worse impact. If the downspouts have visible creases or the gutter hangers are bent, that tells us the storm had serious force behind it.
This correlation is important for insurance claims. Adjusters know that gutter damage and roof damage go hand in hand. If your gutters are beat up but the adjuster says your roof is fine, that's a red flag — either they didn't inspect closely enough, or they're not accounting for the hidden damage we've been talking about.
We frequently handle seamless gutter replacement in Detroit alongside roof work after major storms, because the two systems are so interconnected. A new roof with damaged gutters is like putting new tires on a car with bad brakes — you're not getting the full benefit.
Pro tip: Take photos of your gutters immediately after a hailstorm, before you even schedule an inspection. Time-stamped photos with visible damage strengthen your insurance claim and create a paper trail if the adjuster initially denies coverage.
When to Call a Professional Inspector
Here's the reality: most homeowners shouldn't be climbing on their roofs. It's dangerous, you don't have the training to know what you're looking at, and you can accidentally cause damage that voids your insurance coverage.
Call a licensed roofing contractor with storm damage experience if:
- You experienced a hailstorm with stones 1 inch or larger in diameter
- Your neighbors are getting roof inspections or filing claims
- You see visible damage to gutters, siding, or outdoor fixtures
- You notice granule accumulation in gutters or downspouts after a storm
- Your homeowner's insurance has a claim deadline approaching (typically 1 year from the storm date in Michigan)
At NEXT Exteriors, we offer free storm damage inspections because we know how critical timing is. We're not there to sell you a roof you don't need — we're there to document what happened and give you the information to make an informed decision.
As a CertainTeed Master Shingle Applicator — the highest credential in the roofing industry — our inspections carry weight with insurance adjusters. We know the technical language, we understand material failure modes, and we document everything with photos and written reports that meet insurance company standards.
We've worked with hundreds of homeowners across Macomb County, Oakland County, and St. Clair County through the claims process, and we know what adjusters are looking for. If there's legitimate damage, we'll find it and help you document it properly.
Cost and Insurance Considerations for Michigan Homeowners
Let's talk money, because that's what most of these conversations eventually come down to.
A full roof replacement in Southeast Michigan typically runs between $8,000 and $18,000 depending on the size of your home, the pitch of your roof, and the shingle quality you choose. That's a big number, and it's not one most homeowners have sitting in their savings account.
This is why insurance exists. If hail damaged your roof, your homeowner's policy should cover the replacement cost, minus your deductible. But here's where it gets tricky:
- Actual Cash Value vs. Replacement Cost: Some policies pay only the depreciated value of your roof upfront, then reimburse you for the rest after the work is completed. Make sure you understand which type of coverage you have.
- Claim deadlines: Most Michigan policies require you to file a claim within one year of the storm. Miss that window, and you're paying out of pocket.
- Matching requirements: If only part of your roof is damaged, some policies require the insurance company to pay for the entire roof if they can't match your existing shingles. This is common with discontinued shingle lines.
- Deductibles: Typical wind/hail deductibles in Michigan range from $500 to $2,500. Some policies use a percentage of your home's insured value (usually 1-2%), which can be significantly higher.
We work with homeowners and adjusters every week to navigate this process. Our role is to provide accurate documentation so you're not leaving money on the table, and to make sure the scope of work matches what the insurance company approved.
If you're also dealing with siding damage from the same storm, the claim can expand to cover multiple exterior systems. We've handled comprehensive claims where hail damaged the roof, siding, gutters, and even window screens and trim — all covered under one claim.
What About Homes We're Planning to Sell?
If you're preparing a home for sale in Bloomfield Hills, Lake Orion, or anywhere in Southeast Michigan, undisclosed hail damage is a problem waiting to happen.
Michigan law requires sellers to disclose known defects. If you're aware of a hailstorm and haven't had the roof inspected, a buyer's home inspector will almost certainly flag potential damage during their walkthrough. That either kills the deal or forces you to negotiate a price reduction or repair credit — often for more than it would have cost to address proactively.
We work with realtors regularly on pre-listing inspections and fast-turnaround repairs. If there's damage, we document it, handle the insurance claim, and complete the work before the listing goes live. If there's no damage, we provide a written inspection report that you can share with prospective buyers to demonstrate due diligence.
Other Services from NEXT Exteriors
While hail damage is our focus here, storm events rarely affect just one part of your home's exterior. We're a full-service contractor offering comprehensive exterior services in Detroit and throughout Southeast Michigan.
If you're dealing with storm damage, we can assess and repair:
- Siding: Hail can crack vinyl, dent aluminum, and chip fiber cement. We install siding built for Michigan's freeze-thaw cycles, including James Hardie fiber cement and LP SmartSide engineered wood.
- Windows: Impact damage to window frames, broken seals, and cracked glass are all common after severe storms. Our window replacement services focus on energy efficiency and durability.
- Insulation: If water intrusion from roof damage has compromised your attic insulation, we handle spray foam, blown-in, and batt insulation to restore your home's thermal envelope.
- Painting: Hail can chip exterior paint, especially on wood trim and fascia. We're exclusive partners with Sherwin-Williams for all our exterior painting work.
The advantage of working with a contractor who handles all these systems is coordination. One inspection, one insurance claim, one project timeline. We're not subcontracting out to three different companies who may or may not show up on time.
Ready to Get Started?
NEXT Exteriors has been protecting Michigan homes since 1988. Get a free, no-pressure storm damage inspection from a team that shows up on time and does the job right.
Get Your Free InspectionOr call us: (844) 770-6398
Frequently Asked Questions About Hail Damage
Most Michigan homeowner's insurance policies require you to file a claim within one year of the date of loss (the storm date). Some policies have shorter windows, so check your policy documents or call your insurance agent immediately after a hailstorm. Missing this deadline means you'll pay for repairs out of pocket, even if the damage is legitimate.
Yes. Most roof replacements in Southeast Michigan take 1-3 days depending on the size and complexity. You'll hear noise during the day, but your home remains weathertight and livable throughout the process. We protect landscaping, driveways, and entryways, and we do a thorough cleanup with magnetic sweepers to collect stray nails. Many homeowners go about their normal routines while we work.
Hail 1 inch in diameter (about the size of a quarter) can cause damage to asphalt shingles, especially if the shingles are older or already weathered. Hail 1.5 inches or larger (golf ball-sized) almost always causes damage. But even smaller hail can compromise shingles if the storm is severe, the hail is wind-driven, or your roof is already near the end of its service life. The only way to know for sure is a professional inspection.
It depends on your insurance company and your claims history. Hail damage is considered a weather event, not a negligence issue, so many insurers don't raise rates for a single claim. However, if you've filed multiple claims in recent years, it could affect your premiums or even your ability to renew with the same carrier. This is a question to ask your insurance agent directly — but don't let fear of rate increases stop you from filing a legitimate claim. That's what you pay premiums for.
It's not a bad idea to get a second opinion, especially if your insurance adjuster says there's no damage but you have visible signs like dented gutters or granule loss. Make sure the contractor you hire is licensed, insured, and has experience with storm damage claims. At NEXT Exteriors, we provide free inspections and detailed written reports with photos. We're not interested in creating damage that isn't there — we're interested in documenting what actually happened so you get fair treatment from your insurance company.
Storm chasers are a real problem in Michigan. After major hail events, out-of-state contractors flood the area, offer lowball estimates, do substandard work, and disappear before you can file a warranty claim. Protect yourself by verifying: (1) Michigan contractor's license, (2) liability and workers' comp insurance, (3) local business address, (4) BBB rating and online reviews, and (5) manufacturer certifications like CertainTeed Master Shingle Applicator. NEXT Exteriors has been in Mount Clemens since 1988, holds an A+ BBB rating since 2006, and we're not going anywhere.
Absolutely. This is the entire point of this article. Most hail damage is invisible from the ground and doesn't create immediate leaks. Instead, it compromises the shingle's waterproofing and accelerates aging. Granule loss exposes the asphalt mat to UV damage. Bruising creates soft spots where water can pool. Fractured fiberglass mats allow wind-driven rain to penetrate. You might not see a leak for 2-3 years, but by then the damage has spread to the underlayment and roof deck, turning a $12,000 roof replacement into a $20,000 project with structural repairs.