How to Tell If Your Roof Has Hail Damage (Middle TN Homeowner Guide)

Hail damage is sneaky. From the driveway, your roof can look perfectly fine while the shingles overhead have already lost the granules and asphalt seal that keep your home dry. This guide shows you exactly what hail damage looks like, what size hail does the harm, and how to confirm it without climbing a ladder.

What Size Hail Will Damage a Roof?

Most roofing manufacturers and insurance carriers consider 1" diameter hail (about the size of a quarter) to be the threshold where functional damage starts on a 3-tab asphalt shingle. Architectural shingles tolerate a bit more — typically 1.25"–1.5". Aging shingles fail at smaller sizes because the asphalt mat becomes brittle.

• Pea (¼") to dime (¾"): Cosmetic only on most roofs.
• Nickel to quarter (⅞" – 1"): Functional damage on older or 3-tab shingles.
• Half dollar to ping-pong ball (1¼" – 1½"): Damage on most architectural shingles.
• Golf ball (1¾") and larger: Damage on virtually every roof type, including metal.

What Does Hail Damage Look Like on an Asphalt Roof?

Real hail strikes on asphalt shingles share a few signatures. If you see any of these, get a professional inspection before your filing window closes (most carriers allow 1 year in Tennessee, but evidence fades fast).

• Round black bruises: A circular spot where granules are knocked off, exposing the dark asphalt mat underneath.
• Soft "give" when pressed: A fresh hail bruise feels spongy compared to undamaged shingle — the mat is fractured.
• Random pattern: Hail hits don't follow rows or seams. If the marks line up, it's foot traffic or a manufacturing defect, not hail.
• Granule piles in gutters and downspout splash zones: Heavy granule loss after a storm is one of the clearest indicators.
• Dings on soft metal accessories: Check gutters, downspouts, AC fins, vent caps, and chimney flashing. Round dents on these confirm hail was large enough to damage the roof too.

What Does Hail Damage Look Like on a Metal Roof?

Metal roofs are durable but not immune. Hail damage on metal usually shows as round dimples or dents across panels — most common on standing seam pans and stamped metal shingles. Functional damage typically requires 1.5"+ hail, but cosmetic dents can void some manufacturer warranties and affect resale value.

5 Signs You Should Schedule an Inspection

1. A hailstorm with quarter-size or larger stones hit your zip code in the last 12 months.
2. You can see dents on your gutters, downspouts, or AC condenser fins.
3. You're finding more granules than usual in the downspout splash zone.
4. Neighbors are getting roofs replaced after the same storm.
5. Your roof is 10+ years old — older shingles bruise at much smaller hail sizes.

Why You Shouldn't Wait

Hail bruises self-heal cosmetically. Granules that fell off in the storm wash away in a few months, and the exposed mat darkens with UV exposure, making damage harder to prove. Most Tennessee insurance carriers require a claim within 12 months of the date of loss — and the older the evidence, the harder it is to win.

If You Find Damage, Here's What to Do Next

1. Get a written, photo-documented inspection from a local roofer.
2. File a claim with your insurance carrier — note the storm date.
3. Have your roofer meet your adjuster on-site to walk the roof together.
4. If shingles can't be matched, invoke Tennessee's matching law for a full replacement.