1. Damaged Flashing: May occur due to improper installation, weathering or settling of the home’s foundation.
2. Celing Spots: Caused by roof leaks. The source of the leak may be detected by an inspection in your attic.
3. Missing Shingle Granules: Bare spots on your shingles or an excessive amount of granules in your eavestroughs.
4. Blisters: Excess moisture in your shingles, caused by poor drainage or inadequate ventilation, can cause shingles to blister.
5. Shingle Buckling: Bucking of shingles may be caused by poorly installed underlayment, poor attic ventilation or when new shingles have been installed over old shingles.
6. Missing Shingles: Improper nailing or high winds can cause shingles to fall off.
7. Algae or Moss Growth: Large trees near your roof can provide an ideal growing climate for moss or algae.
8. Rotting: Excess moisture absorption and retention can cause shingles to rot.
9. Shingle Curling: Curling may be caused by improper nailing or lack of ventilation in your attic.