Roof inspections consistently uncover a similar set of problems. Knowing the most common roof problems found during inspections helps you understand what the inspector is looking for and why early detection matters.
1. Missing or Damaged Shingles: Wind, hail, and age cause shingles to crack, curl, or blow off. This exposes the underlayment and deck to water. Even a few missing shingles can lead to leaks.
2. Flashing Failures: Flashing around chimneys, vents, skylights, and valleys is a frequent leak source. Corroded, lifted, or improperly installed flashing allows water to enter.
3. Granule Loss: Asphalt shingles shed granules as they age. Excessive granule loss indicates the shingles are nearing the end of their life and losing their protective coating.
4. Ventilation Problems: Inadequate attic ventilation causes heat and moisture buildup, leading to premature shingle aging, mold, and ice dams. This is often overlooked but critically important.
5. Gutter Issues: Clogged, sagging, or improperly pitched gutters cause water to back up under the roof edge, leading to rot and leaks.
6. Structural Sagging: A sagging roof line indicates possible structural damage, often from long‑term moisture. This is a serious finding that requires immediate attention.
7. Evidence of Leaks: Water stains, mold, or rot in the attic or on ceilings are signs of active or past leaks. The inspector will trace these to their source.
For a complete picture of what inspectors examine, see what roof inspectors look for. For the report that documents these findings, see roof inspection report contents. And for insurance implications of these problems, see does insurance cover roof inspections.