How to Prepare Your Calgary Home for Hail Season

Why Calgary gets so much hail

Calgary sits at the edge of the Rocky Mountain foothills where cold Pacific air collides with warm, moist air moving north from the Gulf of Mexico. That collision produces the severe convective thunderstorms that generate large hail. The city averages 8 to 10 hail days per year, with some events producing stones over 5 cm in diameter — large enough to dent aluminum siding, shatter window screens, split cedar fence boards and strip shingles bare.

The two historically worst hail corridors in Calgary run through the SE quadrant toward Mahogany and Cranston, and through the NE toward Skyview Ranch and Cornerstone — but no part of the city is immune. The 2020 storm caused over $1.2 billion in insured losses in a single evening. In 2023, hail the size of baseballs hit parts of the inner NW. If you have not updated your pre-season inspection habits, now is the time.

When is Calgary hail season?

The peak window runs from June through August, with some activity in late May and early September. The foothills geography channels storms through the city unpredictably — hail can be severe even in years with mild summer weather overall. Environment Canada issues Severe Thunderstorm Watches and Warnings through the Weatheradio system and the Alert Ready notification service — make sure your mobile alerts are turned on before June.

What to inspect before summer — the pre-season walk-around

A 20-minute walk-around before hail season catches existing damage before a storm makes it worse. Go around your home once in good light and check each of these:

Siding panels

Look for dents, cracks, missing sections or panels that have pulled away from the house. Pay particular attention to south and west-facing walls where Calgary storm tracks most often hit first. Cracked vinyl siding lets water wick behind the panel and rot the house wrap and sheathing underneath — by the time it is visible from inside, the repair is significantly more expensive.

If you have James Hardie (fibre cement) siding, look for chipping at panel edges and along the vertical lap joints. Hardie is more hail-resistant than vinyl but the cut edges must be caulked and the surface must be painted to maintain the water resistance.

Soffits and fascia

Check along roof edges for dents, cracks, holes or paint peeling. Damaged soffit lets moisture and pests (specifically wasps, mice and birds) into the attic space. Fascia board damage at the roofline also creates an entry point. Small soffit repairs are fast and inexpensive — leaving them unrepaired through an Alberta winter is not.

Window and door caulking

Calgary's freeze-thaw cycles crack exterior caulk faster than most Canadian climates. Cracked or missing caulk around frames is the most common entry point for water infiltration during heavy rain that accompanies hail storms. Press your finger along every window and door frame caulk joint — if it is brittle, hollow or pulling away from the frame, it needs to be replaced before summer storm season.

Deck and fence

Walk your deck and push each board — soft spots indicate rot underneath that hail impact and rain will accelerate. Test every railing section for wobble. Check fence boards for existing cracks along the grain — hail impact on an already-stressed board often finishes the split. Gate hinges and latches that are already showing wear will fail in the first serious wind storm.

Window screens

Check every screen for holes, bent frames and sections that are no longer seated in the track. Screen mesh shreds in moderate hail — this is actually useful damage to note, since intact screens after a hail event can help you gauge whether the storm was severe enough to file a claim (if the screens are fine, the hail was probably under 2 cm).

What to check immediately after a hailstorm

After a significant storm, inspect the exterior within 24 to 48 hours. You want to document everything before you file an insurance claim — adjusters want to see damage in the condition the storm left it, not after any interim repairs. Take photos with your phone: wide shots for context, close-ups for detail, and a date-stamped photo of any weather station readout or Environment Canada warning if you can get one.

Exterior checklist post-storm

• Dented or cracked siding panels — vinyl and aluminum show damage clearly; look for spatter marks (black impact dots) as well as structural dents
• Damaged soffit — look for holes or sections that are pushed in, hanging or have separated at the joint
• Fascia board dents or cracks along the roofline
• Shingle damage — look from the ground or safely from a ladder at the eaves, but do not walk on the roof yourself immediately after a storm
• Broken or cracked window screens (gauge hail size from screen damage)
• Fence boards — check for fresh splits and for boards that have been knocked loose from the rail
• Deck surface — look for fresh impact marks on soft wood decking; Trex and composite decking resists hail well but not always
• AC condenser fins — if your central air unit took a direct hit, the fins (thin aluminum fins on the outside of the unit) may be flattened, which reduces cooling efficiency. This is an insurance claim item, not a handyman repair.

What a handyman can repair vs. what needs a specialist

Handyman repairs after hail

• Individual siding panel replacement — vinyl panels can be unhooked, replaced and re-locked. Hardie panel replacement requires cutting and caulking.
• Soffit section repair and replacement — vinyl and aluminum soffit sections can be replaced panel by panel without scaffolding on most single-storey and low eave locations.
• Fascia board repair — surface dents in aluminum fascia are cosmetic; cracked or split wood fascia should be replaced before moisture enters.
• Exterior caulking — impact often opens existing caulk joints. Re-caulk with a paintable exterior caulk rated for Calgary temperature extremes.
• Fence board replacement — individual boards and rails replaced; gate re-hung and latch hardware replaced.
• Deck board replacement — split or heavily dented deck boards replaced and secured.
• Window screen repair or replacement — screen mesh replaced in existing frames, or whole screen units replaced.

Requires a licensed roofer

• Shingle replacement or full roof repair
• Structural roof damage — sheathing damage, rafters, ridge boards
• Eaves trough damage where the trough is attached to the fascia system
• Skylight damage

Requires an insurance adjuster first

If you are making an insurance claim — and in most significant Calgary hail events you should be — wait for your adjuster before booking contractors. The adjuster needs to see the full scope of damage undisturbed. Take photos immediately after the storm, but do not start repairs until you have an adjuster's report or written confirmation from your insurer.

The exception is emergency weatherproofing — if the storm opened a hole in the building envelope that will allow water in before the adjuster arrives, you can and should cover it with a tarp or temporary seal and document what you did and why.

Insurance and documentation tips for Calgary hail claims

Alberta homeowner insurance generally covers hail damage to the structure, siding, roofing, fences and outbuildings. Here is what makes a claim go smoothly:

• Report within the required timeframe — most policies require you to report a claim within a set number of days. Check your policy; do not assume you can wait.
• Photo documentation — date-stamped photos of every damaged area taken within 24-48 hours of the storm. More is better.
• Keep packaging — if you purchased anything to make emergency repairs (tarps, caulk, hardware), keep the receipt. These may be reimbursable.
• Do not sign anything from door-to-door contractors — after major Calgary hail events, out-of-province contractors arrive and push homeowners to sign Assignments of Benefits (AOBs) on the doorstep. Do not sign — it transfers control of your claim to a third party.
• Get independent quotes — your insurer will provide an estimate. You have the right to get independent contractor quotes and negotiate if the insurer's estimate is low.

How to get repairs done quickly after a major storm

After a significant hail event, every contractor in Calgary gets backlogged within 48 hours. The fastest path to a quote is sending photos — a clear photo of the damaged siding, soffit or fence lets a handyman assess scope without a site visit. The sooner you reach out, the sooner you get on the schedule before the backlog builds.

For jobs that are covered by insurance, having an adjuster's report in hand when you contact contractors is helpful — it defines the scope and lets the contractor quote against a known list rather than doing their own assessment first.

Batching repairs into a single visit is also more cost-effective. If you have three fence boards, two soffit sections and a fascia dent to fix, combining them saves the second trip charge and often means the job gets scheduled sooner because it is a fuller booking.