• Possible causes:  environmentat pollutants, vegatation, fungus or algae growth, loss of granules due to age of shingles.

• Possible causes: shingles have reached their useful life.

Leakage in the attic after driving rain...

• Possible causes: leaky or inadequate.
• Underlayment: deteriorated flashing.

Roof shingle, sheating and siding decay...

• Possible causes: poor attic ventilation.

Blistering and or peeling of exterior paint...

• Possible causes:  excessive moisture or high humidity due to poor attic ventilation.

Stains on interior ceilings and walls or mold or mildew...

• Possible causes:  inadequate or faulty shingles, underlayment allowing leakage, or inadequate ventilation.

Excesive energy cost...

• Possible causes:  insufficient attic ventilation causes heating/cooling systems to run excessively.