How to Identify Hail Damage on a Roof: A Field Guide for Adjusters.
Every hail claim comes down to one question: did hail damage this roof, or not? Get it wrong in either direction and the file comes back, either from a desk reviewer who can't see the support, or from a contractor who sees what you missed.
This guide walks through how experienced adjusters answer that question in the field: start on the ground, know what real hail damage looks like on shingles, rule out the lookalikes, and document it so someone else can follow your work.
What counts as hail damage
Not every mark is damage. What you're looking for is functional damage: impacts that broke the shingle's mat or knocked loose enough granules to shorten the roof's life or let water in.
Cosmetic marks, wear and manufacturing defects may look similar, but they're a different finding. How cosmetic damage is handled depends on the policy, so read the policy language rather than assuming.
Step 1: Start on the ground
Before you climb, spend ten minutes walking the house. Hail leaves evidence on softer surfaces long before you see it on shingles, and that evidence tells you where to look.
Check these as you go:
Gutters and downspouts: round dents, usually on the top edge and face.
Vent caps, flashing and other soft metals: dents on the side that faced the storm.
AC condenser: bent fins or dents on the cabinet. Fin damage is often cosmetic, so treat it as evidence of direction, not proof of a damaged unit.
Painted and oxidized surfaces: spatter marks, clean round spots where hail knocked off grime. Spatter fades within weeks, so it also suggests a recent storm.
Screens, siding and fences: tears, cracks and dents, mostly on one side.
The side with the most damage faced the storm, and the opposite side should look noticeably cleaner. Write the storm direction down before you climb. It tells you which slopes to test first.
Collateral damage supports your roof findings, but it doesn't prove them. A dented gutter means hail hit the property; it doesn't mean every mark on the roof is hail. The roof still has to stand on its own.
Step 2: Know what hail damage looks like on asphalt shingles
On an asphalt roof, functional hail damage usually shows up in three ways:
Bruises. Press the mark with your thumb. If it feels soft and gives, the mat underneath is fractured, even if the surface looks minor.
Round marks with fresh, dark asphalt showing. The impact knocked the granules off, exposing asphalt that hasn't weathered yet. Edges tend to be sharp.
Cracks or punctures. Clear breaks through the mat, more common with larger hail or brittle, older shingles.
True hail hits are random. They don't follow a line, a seam or a pattern, and they're heaviest on the slopes that faced the storm.
Hail size matters too. As a rough guide, hail smaller than about an inch rarely causes functional damage to asphalt shingles, while larger stones often do. Measure spatter marks and soft-metal dents on the ground so you know what to expect before you climb.
Step 3: Rule out the lookalikes
Hail or Hail Look-Alike? Know Before You Count
Here's where a lot of counts go sideways. Plenty of marks look like hail at first glance, but aren't. Before you add a mark to your tally, take a second to rule out these common look-alikes:
What you're looking at | Hail? | Here's how to tell
|Soft bruise or fractured mat | ✅ Yes | Press it gently. If it feels soft or gives a little, that's a good sign. Hail hits land randomly, not in a pattern.
Round mark with fresh, dark asphalt showing | ✅ Yes | Look for crisp, sharp edges and a scattered, random layout.
Blisters | ❌ No | Small raised bumps, often grouped together. They feel hard, not soft. |l
Granule loss from age | ❌ No | The wear is pretty even across the slope and usually worst where water runs off.
Scuffs and foot traffic | ❌ No | Check near the ladder and along walking paths. Scrapes in those spots are usually from people, not hail.
Nail pops | ❌ No | If the mark lines up with a nail underneath, it's a nail pop.
Tree limb or tool marks | ❌ No | Look up and around. An overhanging branch or a dropped tool usually explains these.
Manufacturing flaws | ❌ No | If the same mark shows up in the same spot on shingle after shingle, it came from the factory, not the sky.
Quick tip: When in doubt, don't count it yet. Take a close-up photo, note your reasoning, and look at the mark again after you've walked the whole slope. Context makes the call a lot easier.
If you're unsure, leave the mark out of your count and photograph it anyway. A careful, defensible count holds up better than a high one that gets overturned on reinspection.
Step 4: Use test squares, not impressions
"The roof looks hit" isn't a finding. A test square turns what you see into a number a carrier can act on.
Lay out a 10-by-10-foot square (100 square feet, one roofing square) in a typical area of each slope that faced the storm, away from edges, ridges and valleys. Circle only the functional hits inside it, write the count in the square, and record it per slope.
Many carriers use a threshold of hits per square to decide between repair and replacement. You'll often hear 8 to 10, but carriers set their own numbers, sometimes higher, so always check the guidelines for your assignment.
We cover this step by step in our guide to laying out and counting a hail test square.
Step 5: Photograph it so someone else can follow
A desk reviewer should understand your findings without visiting the property. Shoot in the same order every time:
The overview: the whole slope from the edge or ridge.
The tape along one side, proving the square is 10 feet.
The full square, with circles and the count visible.
Two or three close-ups of typical hits, with a coin or tape for scale.
Anything you chose not to count, so your reasoning is on the record.
Caption each photo with where it is and what it shows, for example "Front slope – Hail hits marked – 9 hits." Clear captions are what make a file easy to review.
Quick field checklist
Walk the house and photograph collateral damage before you climb
Write down the storm direction
Test the slopes that faced the storm first
Press every mark: soft means bruise, hard means blister
Rule out wear, scuffs, nail pops and manufacturing flaws
Count only functional hits inside a 10×10 square
Photograph overview, tape, square, close-ups and doubtful marks
Check the carrier's guidelines before recommending repair or replacement
Learn the whole process
Identifying hail damage is one part of handling a hail claim. Our Handling Hail Claims course walks you through the rest, from verifying the storm to building an estimate that holds up, with short videos, field checklists and a certificate when you finish.
And when you're done on the roof, the Claim Photo Labeler lets you caption every photo on your phone before you leave the driveway.
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