can be limited if you pay close attention to your roof. Here are some key danger signals that your roofing
system is not protecting your home and is in need of repair.
Dark, “dirty-looking” areas on
Possible Causes: Environmental pollutants; vegetation, fungus or algae growth; loss of granules due to age of shingles.
Missing, cracked or curling shingles.
Possible Cause: Shingles have reached their useful life.
Leakage in attic after driving rain.
Possible Causes: Leaky or inadequate shingle underlayment; deteriorated flashing.
Roof shingle, sheathing and siding decay.
Possible Cause: Poor attic ventilation.
Blistering and/or peeling of outside paint.
Possible Cause: Excessive moisture or high humidity due to poor attic ventilation.
Stains on interior ceilings and walls or mold and mildew growth.
Possible Cause: Inadequate or faulty shingle underlayment allowing leakage, or inadequate ventilation.
Excessive energy costs.
Possible Cause: Insufficient attic ventilation causes heating and/or cooling system to run excessively.