What commonly causes small dimples or circular depressions on asphalt shingles?

Small dimples or circular depressions on asphalt shingles are commonly caused by hailstones. When hail impacts the surface of the shingles, it can create indentations where the hail strikes. This can damage the integrity of the shingles, leading to potential leaks if left unaddressed. Hail damage is often recognizable by these distinct depressions and can be an important concern during home inspections, especially in areas prone to severe weather.

Sun exposure can cause issues like fading and granule loss but is not responsible for creating dimples or circular depressions. Wind damage typically results in tearing or lifting of shingles rather than indentations. Improper installation might lead to various issues such as lifting or inadequate sealing but would not typically cause dimpling. Understanding hail damage and its effects on shingles is crucial for effective roof inspections and maintenance.