What Does Hail Damage Look Like on a Roof? Signs Every St. Louis Homeowner Should Spot

St. Louis sits in one of the most active hail corridors in the country. The National Weather Service office in St. Charles has documented dozens of significant hail events across the metro area in recent years. The 2001 I-70 supercell caused over $2 billion in property damage, most of it concentrated in Greater St. Louis. Events like that are not rare here. Yet most homeowners still cannot tell real hail damage from normal roof wear. If you own a home in the 63101 through 63146 ZIP codes, knowing what does hail damage to a roof look like could save you thousands. A certified roofing contractor in St. Louis can confirm your suspicion, but the first step is learning what to look for yourself.

This guide covers the visual signs of hail impact on asphalt shingles, metal roofing, and flat roofs. It also walks through ground-level inspections, photo documentation for your insurer, and the full insurance claim timeline.

How Hail Damages Asphalt Shingles

Asphalt shingles cover the majority of homes across St. Louis County, St. Charles County, and Jefferson County. According to the Missouri Climate Center, Missourians experience hail two to three times per year on average. Most of it is small. But hailstones 1 inch or larger can fracture the fiberglass mat inside a shingle, creating functional damage that qualifies for an insurance claim.

Granule Loss and Dark Spots

Granules are the rough particles bonded to a shingle's surface. They protect the asphalt beneath from UV rays and moisture. When hail strikes, it knocks granules loose and exposes the dark mat underneath.

• Bald patches on the shingle surface where the coating is stripped away.

• Shiny or dark spots that stand out against the surrounding texture.

• Granule buildup in gutters after a storm, signaling widespread surface loss.

The exposed asphalt dries out faster under the sun, and the shingle loses its ability to shed water. According to Travelers Insurance, granule loss that reveals the felt layer is a clear sign of claimable hail damage.

Soft Spots and Bruised Shingles

Larger hailstones compress the shingle without tearing through it, leaving a spongy area beneath the surface. Roofers call this "bruising." You can feel it by pressing gently with your thumb.

• The spot gives slightly under pressure, like a bruised apple.

• The dent is usually round and matches the hailstone's shape.

• These bruises weaken the mat and create a point where cracks form later.

Bruised shingles look fine from the ground. That is why professional inspections after a storm matter, especially in neighborhoods like Kirkwood, Ballwin, and Mehlville where older roofs are common.

Cracked or Fractured Shingle Mat

When hail is large enough, it cracks the shingle outright. Fresh fractures show sharp edges and a brown or orange color at the break, with little weathering around the edges.

• Splits often have impact marks or dents running along the fracture line.

• Golf-ball-sized hail (1.75 inches) or bigger can punch through the shingle entirely.

• This damage is most commonly found in south St. Louis County (63123, 63125, 63129) after spring storm systems.

Hail Damage on Metal and Flat Roofs

Metal and flat roofing systems show hail impact differently than asphalt shingles.

• Metal roofs resist punctures but dent easily. Look for round dings across panels, ridge caps, and flashing. Paint may chip at impact sites.

• Flat roofs using modified bitumen or TPO membranes may show punctures, tears, or displaced gravel. Water pooling in new locations signals hidden membrane damage.

• Metal vents, pipe boots, and flashing on any roof type dent more easily than shingles. Adjusters often check these first because they provide clear evidence of hail.

How to Inspect for Hail Damage From the Ground

Climbing onto a damaged roof is dangerous. Start with a ground-level survey instead. You can gather useful evidence without a ladder.

• Check gutters and downspouts. Heavy granule accumulation after one storm is a strong indicator.

• Look at outdoor furniture, decks, and fences. Hail that damages a roof also dents patio tables and chips vinyl siding.

• Examine window screens and AC units. Pitted screens and dented condenser fins confirm hail reached your property.

• Use binoculars. Scan the roof for color variations, shiny patches, or areas where shingles look different.

If you see ground-level signs, your roof likely took damage too. That is the point to call for a professional inspection.

What to Document Before Contacting Your Insurer

Strong documentation speeds up the entire claim process. Complete these steps within 24 to 48 hours of the storm.

• Photograph damage from multiple angles. Capture dented gutters, chipped siding, and any visible shingle issues. Place a coin in the frame for scale.

• Record the storm date and time. Your insurer will cross-reference this with weather data.

• Save weather alerts. The NWS St. Louis office at weather.gov/lsx/events publishes detailed reviews for every significant storm.

• Write a short log noting what you saw and any temporary repairs you made.

Do not make permanent repairs before the adjuster inspects. Temporary protective measures like tarping are fine, but fixing the roof before assessment can reduce your payout.

The Insurance Claim Process, Step by Step

Filing a hail damage claim follows a predictable timeline. Here is what most St. Louis homeowners experience.

Step 1. Get a professional roof inspection. A certified contractor documents all damage with photos and a written report. This report carries weight with your adjuster.

Step 2. File the claim. Call your insurer or submit through their app. Provide your policy number, storm date, and a brief damage description.

Step 3. Meet the adjuster. The insurer sends an adjuster to inspect. Be present, and have your roofing contractor there to point out damage the adjuster may miss.

Step 4. Review the report. The adjuster's report determines your Actual Cash Value (ACV) payout, which accounts for roof age and depreciation.

Step 5. Begin repairs. Once approved, hire your contractor. If your policy covers Replacement Cost Value (RCV), you receive the depreciation holdback after repairs are finished and invoiced.

Step 6. Negotiate if needed. If the estimate seems low, request a re-inspection with your contractor's itemized report.

Most claims wrap up in a few weeks. Missouri homeowners typically have up to one year from the storm date to file, but check your policy for exact deadlines.

How a Certified Contractor Strengthens Your Claim

A local, licensed hail damage repair company in St. Louis makes the process smoother. Experienced contractors use the same estimating software (Xactimate) that insurance companies rely on. They identify hidden damage like bruised shingles or compromised flashing. They also handle supplement requests when the adjuster's initial assessment falls short.

Avoid storm chasers who show up uninvited, pressure you for a quick signature, or offer to cover your deductible.

When to Act After a St. Louis Hailstorm

Hail season runs roughly from March through August, with peak activity in May and June. If a storm drops hail across Chesterfield, Creve Coeur, Affton, or anywhere in the 63017, 63141, or 63126 ZIP codes, act quickly.

A bruised shingle that looks fine in June can crack and leak by October. Granule loss that seems minor leaves asphalt exposed to Missouri's summer heat, shortening the roof's remaining life by years. Early inspection protects your home and strengthens your claim.

Homeowners across Greater St. Louis trust Coldstream Exteriors in St. Louis, MO for honest inspections and insurance-backed roof restoration.

Conclusion

Hail damage on a roof is not always obvious. Granule loss, soft spots, and hairline cracks in the shingle mat can go unnoticed for months while water slowly works into your home. St. Louis homeowners face hail threats every spring and summer. The difference between a denied claim and a full roof replacement often comes down to early detection and proper documentation.

Walk your property after every storm. Check your gutters, scan your siding, and look for the signs outlined above. If anything looks off, call a licensed local contractor for a professional inspection before reaching out to your insurer. The evidence you gather in those first 48 hours shapes the entire outcome of your claim.

Frequently Asked Questions

What size hail causes damage to asphalt shingles?

Hailstones around 1 inch in diameter, about the size of a quarter, are large enough to fracture the fiberglass mat inside an asphalt shingle. Anything smaller than three-quarters of an inch rarely causes functional damage.

Can I see hail damage from the ground without going on my roof?

You can spot many signs from ground level. Look for dented gutters, chipped siding, pitted window screens, and granule buildup in downspouts. Use binoculars to scan the shingle surface for dark spots or color changes.

How long do I have to file a hail damage claim in Missouri?

Most homeowner policies allow up to one year from the date of the storm. Every policy is different, so check your coverage documents for the exact deadline and file as soon as you notice potential damage.

Does homeowners insurance cover hail damage to a roof?

Most standard policies in Missouri cover hail damage because it falls under sudden, accidental events. Replacement Cost Value policies pay for new materials. Actual Cash Value policies factor in depreciation based on the roof's age.

How do I tell the difference between hail damage and normal wear?

Hail damage creates random, round dents with sharp edges and displaced granules. Normal wear shows up as uniform fading and gradual granule thinning. Blistering from trapped moisture produces raised bumps, while hail dents press inward. A trained inspector can distinguish between the two during a post-storm evaluation.