Hail Damage Roof Inspection Illinois: What to Find

Hail damage appears as circular bruises on asphalt shingles where hailstones compressed the mat without tearing through the surface. You'll see shiny spots where granule coating was knocked off, exposing the black asphalt substrate underneath. On metal flashing, vents, and gutters, hail leaves dents that are easier to spot than shingle damage. The size of the hailstone determines severity. Stones one inch or larger—common in northern Illinois during May and June storms—create damage deep enough to compromise shingle integrity even when the surface looks intact. Smaller stones under three-quarters of an inch may only displace granules without cracking the underlying mat. Damage patterns follow the storm's wind direction. If hail fell with northwest winds, the northwest-facing roof planes show the heaviest impact. Check ridge caps, valleys, and transitions where water flow concentrates—these areas fail first after hail weakens the shingle structure.

Standing in your yard and looking up won't reveal shingle bruising. The damage sits flat against the roof plane, visible only when you're directly above it at a low angle where light catches the compressed spots. Granule loss looks like normal wear from the ground, but up close it shows defined circular patterns matching hailstone diameter. Underlayment exposure happens when granules wash away completely. This black substrate absorbs more heat than intact shingles, accelerating degradation. You won't see it from below until the shingle itself begins to curl or crack weeks later. Seal strip damage is invisible without lifting shingle tabs. Hail impacts break the adhesive bond between shingle layers, allowing wind to work underneath. The first windstorm after hail often tears off shingles that looked fine the day before.

Schedule inspection within 72 hours after any hail event reported at one inch diameter or larger in your county. The National Weather Service issues hail size reports by location—check their storm reports for your zip code after severe weather passes. Most Illinois insurance policies require claim filing within one year of the damage date, but documentation is stronger when the inspection happens immediately. Spring hail season runs April through June across northern and central Illinois, with peak activity in May. If your area experienced multiple storms in one season, each event may have added damage. A single inspection after the last storm documents the cumulative impact. Fall inspections before winter make sense even without recent hail. Damage from spring storms often doesn't leak until freeze-thaw cycles expand the cracks. Catching it in October gives you time to plan replacement before snow complicates the work.

Shingles take the most obvious damage, but inspectors check seven other components that fail after hail. Roof vents—both turbine and static box vents—crack at seams when struck. Damaged vents leak during rain even when shingles around them look intact. Chimney flashing and step flashing along walls dent and separate from the roofline, creating water entry points. Gutters and downspouts show denting on the top edge and bottom trough. Inspectors photograph gutter damage as corroborating evidence that hail hit hard enough to damage shingles. Satellite dishes, HVAC units, and skylight frames all dent visibly and help establish hailstone size for your insurance adjuster. Soffit and fascia panels crack when hail strikes at an angle during high winds. Ridge vents—the long vented caps running along roof peaks—split internally, allowing water into the attic even when the exterior looks fine. Each component gets documented with photos, measurements, and location notes.

Illinois municipalities require permits for full roof replacement but not for repairs covering less than 25% of total roof area in most counties. If hail damage triggers replacement, your contractor pulls the permit and schedules the required inspection. Cook, DuPage, Lake, Kane, and Will counties enforce the most detailed permitting processes, often requiring engineering signoff for homes built before specific code updates. Replacement projects must meet current code regardless of when your home was built. This means adding ice and water shield underlayment in valleys and along eaves, upgrading ventilation to match current ratios, and using shingles rated for Illinois wind zones. Your existing roof may not have these features—code compliance adds cost but prevents future insurance claim denials. Some municipalities restrict work during winter months or require additional inspector availability fees for scheduling outside normal hours. Permits typically take three to seven business days to issue in suburban counties, longer in Chicago city limits.

Photograph your gutters and downspouts from ground level, focusing on dents along the top edge. Take wide shots showing the full roofline from all four sides of your house, and close-ups of any visible shingle damage, curling, or missing tabs. Note the date and time of the hail event based on National Weather Service reports for your location. Check your attic for water stains on rafters or decking, even if you haven't seen interior leaks. Hail damage often allows minor seepage that shows in the attic before it reaches your ceiling. Photograph any stains with a reference object for scale. Gather your insurance policy documents, specifically the section covering wind and hail. Note your deductible amount and any depreciation language. Inspectors don't need this information, but having it ready speeds the claim process once damage is confirmed.