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 |
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Blistering and/or
peeling of interior and/or exterior paint
Possible cause: Excessive temperature or high
humidity due to poor attic ventilation |
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Stains on
interior ceilings and walls or mold and mildew
growth
Possible cause: Inadequate or faulty shingle
underlayment allowing leakage or inadequate
ventilation |
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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 |
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Dark,
"dirty-looking" areas on your roof
Possible cause: Environmental pollutants;
vegetation, fungus or algae; loss of granules due to
age of shingles |
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Excessive energy
costs
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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