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There are several key signals that you may have a problem with your existing roof system. You may need to consider repairs or replacement if:

     

  • You notice leakage in your attic after a wind-driven rain.
    Possible cause: Leaky or inadequate shingle underlayment or deteriorated flashing.
  • You notice leakage in your attic after an ice build-up.
    Possible cause: Inadequate shingle underlayment allows water from ice dams to leak into attic.
  • You notice blistering/peeling of interior/exterior paint.
    Possible cause: Excessive temperature or high humidity due to poor attic ventilation.

  • There are stains on your interior ceilings and/or walls.
    Possible cause: You either have inadequate or faulty shingle underlayment allowing leakage from ice dams.
  • You notice decay of roof shingles, sheathing, and/or siding.
    Possible cause: Poor attic ventilation
  • You find missing, cracked or curled shingles.
    Possible cause: Shingles have reached the end of their useful life.
  • There are stains on your interior ceilings and/or walls.
    Possible cause: You either have inadequate or faulty shingle underlayment allowing leakage from ice dams.

  • You see dark, "dirty-looking" patches on your roof.
    Possible cause: Environmental pollutants; vegetation, fungus or algae; loss of granules due to age of shingles.
  • You are receiving excessive energy bills.
    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 conditioning 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.