Field guide

Hail Damage Roof Claims: What the Adjuster Counts Before Paying

The adjuster is not counting shingles. They are counting qualifying hits in a test square, and the number that matters is 8 to 10. A test square is 10 by 10 feet, 100 square feet, on each slope of the roof. A qualifying hit is a bruise, a fracture of the reinforcing mat, a puncture, or granule displacement that exposes the bitumen. If a slope has 8 to 10 qualifying hits in a test square, the slope gets replaced. If it has fewer, it gets repaired, or nothing. The size of the hail matters too: functional damage starts at about 1 inch for three-tab shingles and 1.25 inches for laminated architectural shingles.

The test square is the whole claim

A homeowner sees hail damage as a roof full of dents. An adjuster sees it as a count. The standard method, from HAAG Engineering, is the test square: a 10 by 10 foot square, 100 square feet, marked on each slope of the roof, inside which the adjuster counts qualifying hits. A qualifying hit is a bruise, a fracture of the reinforcing mat under the shingle, a puncture, or granule displacement that exposes the bitumen underneath. Granule loss alone, without exposed bitumen, does not count.

The threshold is 8 to 10 qualifying hits per test square, per slope. Hit that number and the slope gets replaced. Fall short and the slope gets repaired, or nothing. The count is per slope, not per roof, which is why a claim can replace the south slope and leave the north slope untouched: the hail came from one direction, and only the slope that faced it took the hits.

The size of the hail sets the floor. Functional damage, damage that shortens the roof's life, starts at about 1 inch diameter for three-tab shingles and 1.25 inches for laminated architectural shingles. Smaller hail usually causes cosmetic damage, dents and scuffs that do not affect the roof's function. Many policies in hail-prone states now exclude cosmetic damage, which means a roof can be visibly dented and still not be a covered loss. The homeowner who does not know the difference will expect a replacement. The adjuster who does will count the hits.

The soft metals tell the truth

The adjuster does not only look at shingles. They look at the soft metals, gutters, downspouts, vents, flashing, and air conditioner fins, because soft metal dents at smaller hail sizes than shingles do, and it corroborates the hail size and the storm. Dented gutters with undamaged shingles suggest the hail was too small to damage the roof. Undamaged gutters with damaged shingles suggest something else caused the damage, and the adjuster will look for it.

The vents are the most useful check. A turbine vent or a ridge vent that is dented on one side tells the adjuster the direction the hail came from, which should match the slope with the most hits. An air conditioner condenser with dented fins, on the same side of the house, is the same evidence. The soft metals are a second count, independent of the shingles, and a claim where the two do not agree is a claim that gets questioned.

The homeowner's job, before the adjuster arrives, is simple: do not clean up. Do not replace the dented gutter, do not straighten the vent, do not wash the roof. The evidence is the damage, and the damage is the claim. Take photos, note the date and time of the storm, and keep the hail if any is still on the ground. The adjuster will do their own count, and the photos are the backup if the count is disputed.

What to expect, and what to dispute

A claim that meets the threshold on one or more slopes will usually be approved for those slopes, with the rest of the roof repaired or left alone. A claim that falls short will be denied or approved for repair only. The denial is not the end: the homeowner can request a re-inspection, hire an independent inspector, or invoke the appraisal clause in the policy, where each side hires an appraiser and the two agree on a third.

The most common dispute is not the count. It is the scope: whether the damage is functional or cosmetic, whether the whole slope or just the damaged area gets replaced, and whether matching matters, if the new shingles do not match the old ones, some policies cover the whole slope for appearance. The policy language decides these questions, not the adjuster, and the homeowner who reads the policy before the inspection will know which ones to ask.

The roofer's role in all of this is not to argue with the adjuster. It is to document the damage, mark the test squares, count the hits, and present the evidence. A roofer who shows up with a chalked test square and a count sheet is a roofer the adjuster takes seriously. A roofer who shows up with a sales pitch is not.

Frequently asked questions

How many hail hits does it take to replace a roof?

About 8 to 10 qualifying hits in a 10 by 10 foot test square, 100 square feet, on a slope. A qualifying hit is a bruise, a fracture of the reinforcing mat, a puncture, or granule displacement exposing bitumen. Fewer than that, and the slope is usually repaired, not replaced.

What size hail damages a roof?

Functional damage starts at about 1 inch diameter for three-tab shingles and 1.25 inches for laminated architectural shingles. Smaller hail usually causes cosmetic damage, which many policies in hail-prone states now exclude.

What is a test square?

A 10 by 10 foot square, 100 square feet, marked on each slope of the roof. The adjuster counts qualifying hail hits inside it. The count in the square is what decides whether a slope is replaced or repaired.

Why does the adjuster check gutters and vents?

Because soft metals, gutters, vents, and air conditioner fins, dent at smaller hail sizes than shingles, and they corroborate the hail size and the storm. Dented gutters with undamaged shingles suggest the hail was too small to damage the roof. Undamaged gutters with damaged shingles suggest something else caused the damage.