Can Small Hailstones Actually Damage a Roof?

Small hailstones, often under an inch wide, can still pack enough force to harm roofing materials. When wind pushes them at an angle, they strike with more impact than a straight drop. Hail that is dense, like ice balls with little air, can be especially damaging.

On asphalt shingles, small hail can knock off granules, exposing the underlying mat. That exposure speeds up weathering and makes the shingle brittle. On clay or concrete tiles, even a light hit can create hairline cracks that allow water to seep through. Metal roofs can show dents, but those dents may not leak right away.

• Granule loss on shingles
• Hairline cracks in tiles
• Dents on metal panels
• Loosened flashing or seals
• Soft spots on flat roofs
• Hidden damage under gutters

After a storm, check your yard for broken shingle pieces or granules in the gutters. Look at downspouts for debris that came off the roof. If you see anything, take photos for your records. Also, note the date and the size of the hail you saw.

Inside your home, watch for new stains on ceilings or walls, especially near the roof edges. If you find a wet spot, act quickly to prevent further damage. You can place a bucket under a drip, but do not climb onto a wet roof yourself. Safety comes first.

While you cannot stop hail, you can reduce its impact. Keep trees trimmed so branches do not fall on the roof. Clean gutters regularly so water flows away quickly. If you are replacing a roof, ask about impact-resistant materials that handle hail better.

In Fresno, with its hot semi-arid climate, roofs take a beating from sun and occasional storms. Regular maintenance helps extend the life of your roof. If you live in Fresno, consider a yearly roof check, especially after hail events. A small investment now can save you from bigger repairs later.