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Presented by
| Leakage in the attic after a driving rain. |  |
Possible Cause: Leaky or inadequate shingle underlayment; deteriorated flashing. |
| Blistering and/or peeling of exterior paint. |  |
Possible Cause: Excessive moisture or high humidity due to poor attic ventilation. |
| Stains on interior ceilings and walls. |  |
Possible Cause: Inadequate or faulty shingle underlayment allowing leakage from ice dams. |
| Roof shingle, sheathing, and siding decay. |  |
Possible Cause: Poor attic ventilation. |
| Missing, cracked or curling shingles. |  |
Possible Cause: Shingles have aged beyond their useful life. |
| Dark, "dirty-looking" areas on your roof. |  |
Possible Cause: Environmental pollutants; vegetation, fungus or algae growth: loss of granules due to age of shingles. |
| Excessive energy costs. |  |
Possible Cause: Insufficient attic ventilation causes heating/cooling system to run excessively. |
