25 Roof Leak Warning Signs (With Photos) — When to Call a Roofer for Repair

Moment #7: Cracked shingle corners

Cracks often start at the corners where shingles flex the most. Once the surface breaks, water can work under the shingle layer and spread sideways. This is a typical sign of aging asphalt shingles or repeated thermal expansion. If you see multiple cracked corners in one area, the roof may be entering a faster wear phase. Document the damage and watch for related attic moisture after rain.