Hailstones form when powerful updrafts in thunderstorms carry water droplets high into freezing layers of the atmosphere—often more than five miles up. As the droplets cycle through these cold regions, they collect many layers of ice until their weight overcomes the updraft and they fall to the ground. Stones about one inch in diameter (roughly the size of a quarter) strike with enough force to damage shingles, gutters, windows, fascia, patio furniture, and plants.
On asphalt shingles, the impact creates both invisible micro-fractures and visible granule loss on the fiberglass mat. Insurance adjusters look primarily for the physical evidence of strikes. Where a hailstone hits, it knocks granules off the surface, leaving a characteristic “smudge” or bruise mark. These marks are the clearest indicators of roof damage. Repeated impacts can widen the micro-fractures into tiny openings that breach the shingle’s waterproof barrier. Once that barrier is compromised, rainwater can slowly penetrate, leading to humidity in your attic causing mold, rotten decking, and interior drywall damage over the course of months or years.
There is some good news. Many roofs installed within the past decade include a synthetic underlayment beneath the shingles. This secondary moisture barrier can slow water intrusion after hail damage occurs, buying homeowners valuable time for a proper inspection and, if needed, roof replacement.
Several signs of hail damage are visible without a professional inspection:
- Granules collecting beneath gutter downspouts
- Dents on garage doors, gutters, grills, or vehicles
- Torn fabric on window screens and patio furniture
If you notice any of these indicators, contact a reputable local roofing company. A thorough inspection can document the damage and help you decide whether filing an insurance claim makes sense.
Full roof replacement is the most reliable way to address the extent of hail damage. Removing the existing shingles and underlayment allows the roof sheathing to be inspected for water damage or broken boards. New shingles, underlayment, and water barriers—installed with modern flashing and weather seals—restore the home to optimal pre-storm condition with shingle warranties up to 50 years.
Hail claims typically cover replacement when damage meets policy thresholds (commonly eight hits per 10′ × 10′ test square on a given roof plane). Always have a local contractor perform an inspection and walk you through the findings before you file a claim. Storm-chasing crews will often travel from hours away and are strongly motivated to push you into a signed contract on their first visit. A trusted local roofing company can give you an unbiased assessment and guide you through the process with your best interests in mind.