Hail Damage Roof Insurance Claims in Calgary: What Actually Happens, Step by Step

If you live in Calgary, hail is not a rare event. The City of Calgary states plainly that the city sits in “hail alley,” the area that sees the most hail in Canada, and that every community in the city is equally exposed. Hail season here runs roughly June through September, with July the usual peak.

The August 5, 2024 storm produced hailstones the size of chicken eggs, affected nearly one in five homes in Calgary and generated more than 130,000 insurance claims and close to $2.8 billion in initial insured damage — a figure later revised upward to about C$3.29 billion. It was not a one-off: the Insurance Bureau of Canada puts the 2020 Calgary-area hailstorm at over $1.2 billion and the 2021 storm at $700 million.

So the claim process is not exotic. It is routine — and it goes better when you know the sequence.

What hail actually does to an asphalt roof

Most hail damage does not look like a hole. On asphalt shingles it shows up as bruising: the hailstone knocks granules loose and fractures the mat underneath. From the ground the roof can look completely normal. What you see first is usually damage to the softer parts of the house — dented aluminum fascia, dimpled soffit, bruised eavestrough, scarred vinyl siding, and a scatter of granules at the bottom of the downspouts.

That granule loss is the real problem. Granules are the shingle's UV shield. Once they are gone in patches the exposed asphalt ages fast, and a roof rated for 25 years starts behaving like a 12-year roof. This is why a hail claim is worth filing even when nothing is leaking yet.

The first 72 hours

1. Photograph the ground-level evidence. Fascia, soffit, gutters, siding, screens, deck furniture, vehicles. Date-stamped photos. Do not climb up.
2. Note the storm date. Insurers match your claim against known storm dates and radar. If you are unsure, the date is usually in local news coverage.
3. Call your broker or insurer and open the claim. You are reporting a loss, not committing to anything.
4. Do temporary protection only if water is entering. Tarping a leak is reasonable and usually reimbursable. Permanent repairs before the adjuster sees the roof are not.
5. Get an independent roof inspection. An adjuster assesses your loss for the insurer. You are entitled to your own assessment of the same roof.

What your policy covers — and what it doesn't

Standard home insurance policies in Canada cover damage caused by hail and wind, including water that enters through openings suddenly created by the storm (Insurance Bureau of Canada). What is not covered is pre-existing damage. If your roof was already worn out, or damage from an earlier storm was never reported, an adjuster can decline that portion — the single most common reason Calgary hail claims get reduced.

So after any significant hail event, get the roof looked at even if you decide not to claim. A dated inspection report establishes the roof's condition, which protects you next time.

Deductibles, depreciation, and the part that surprises people

Two numbers determine what actually reaches your bank account.

Your deductible. Typically a fixed amount, commonly $500 to $2,000 but sometimes higher, or in some policies a percentage of the insured value. It is subtracted from the settlement, and it is your cost — no contractor can absorb it for you, and any contractor who offers to should be shown the door.

How your roof is valued. This is where Alberta policies have shifted. Many now settle roofs on a depreciated basis rather than full replacement cost. Aviva's Alberta Roof and Siding Limitation Endorsement, for example, applies an age-adjusted cost factor based on the material and its age at the time of loss to asphalt shingles, tar-and-gravel or membrane flat roofs, and vinyl or aluminum siding.

Note what that endorsement carves out: Class 4 hail-resistant asphalt shingles are excluded from the age adjustment. Same insurer, same storm — the impact-rated roof gets valued differently. Aviva also offers up to $2,500 toward hail-resistant materials on an insured loss.

Class 4 is a defined standard, not marketing language. Under UL 2218, a 50.8 mm (two-inch) steel ball is dropped from 20 feet onto the shingle, which must not crack. The City of Calgary's own analysis found Class 4 products reduce the chance of hail damage by roughly 15 times compared with standard asphalt shingles, at about 45–50% more installed cost, paying for themselves in about five years on average.

Worth knowing: the City's $3,000 Resilient Roofing Rebate launched in June 2021 but council ended it in 2022 once funding was exhausted, despite ongoing calls to revive it. If a contractor tells you the City rebate is still available, they have not checked.

If you are replacing anyway, a metal roof is the other route out of the depreciation cycle. The City notes metal roofs last up to four times longer than asphalt, that steel resists hail better than aluminum, and that while substantial hail can leave visible dents, the dents do not affect the roof below.

The adjuster visit

The adjuster will either walk the roof or send a ladder assist or drone. What helps your file:

• A test square — a marked 10 ft × 10 ft section with hail strikes counted. This is how the industry decides whether a slope is repairable or needs replacement.
• Damage on multiple elevations, since hail is directional and one slope may take almost everything.
• Collateral damage documented — soffit, fascia, gutters, vents, siding. Metal accessories dent visibly and corroborate the roof damage.

You are allowed to have your own contractor present for that inspection, and it is generally worth doing.

Preferred vendor or your own contractor?

Your insurer may suggest a preferred vendor. You are not required to use one. In Alberta you choose who works on your home. What matters is that whoever you choose tears off to the deck — roofing over existing asphalt shingles is not permitted under Alberta Roofing Contractors Association standards, and reroof sheathing must be at least 9.5 mm — carries current WCB clearance and liability coverage, and gives you a written scope you can compare line by line against the adjuster's.

Frequently asked questions