Leakage
in attic after wind-driven rain
Possible
cause: Leaky or inadequate shingle underlayment or deteriorated flashing
Leakage
in attic after ice build-up
Possible
cause: Inadequate shingle underlayment allows water from ice dams to leak
into attic
Blistering
and/or peeling of interior
and/or exterior paint
Possible
cause: Excessive temperature 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
Decay
of roof shingles, sheathing,
and/or siding
Possible
cause: Poor attic ventilation
Missing,
cracked or curled shingles
Possible
cause: Shingles have reached the end
of their useful life
Dark,
"dirty-looking" areas on your roof
Possible
cause: Environmental pollutants; vegetation, fungus or algae; loss of
granules
due to age of shingles
Click here for FAQs About What's Growing On Your Roof!
Possible cause: Insufficient attic ventilation causes heating/cooling system to run excessively
In warm weather, inadequate ventilation will trap hot air in the attic, causing air c onditioning systems to work harder, or leaving your home's interior hotter and less comfortable. Attic Ventilation: In both hot and cold weather, insufficient attic ventilation may cause moisture in the attic to become trapped and condense on the rafters. This condensed moisture can drip down onto the insulation and reduce its effectiveness.
Excessive energy costs can result.
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