American Society of Home Inspectors (ASHI)
2767 Dewey Avenue
Rochester, NY 14616
Office: 585-349-3900
Fax: 585-349-3834
www.InspectNY.com

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Roof Shingles

Asphalt Roof Shingles

Asphalt roof shingles are designed to last from 20-35 years depending on the type. Under normal circumstances they do achieve their anticipated life, although there are some common factors that can cause a roof to fail earlier.

Ventilation:

Ventilation is a system of intake and exhaust that creates a flow of air. Ventilation of an attic is extremely important not only for obtaining the proper life expectancy of a roof, but also to provide year-round comfort in the house. The attic should be within 10 F of the outside temperature. Several different types of vents achieve ventilation. There are intake vents, exhaust vents, ridge vents, wind turbine vents, and power ventilators. Without a proper ventilation system the roof shingles start baking causing curling, cracking, and premature failure.

Wind Turbine Vent
Power Ventilator

Link to Ice Damming

Improper Installation:

Installing roof shingles different than typical modern building practices can also cause premature roof failure. Not using the proper underlayment, roof material, flashing, or valleys can cause failure within the 1st year. It is important to ensure all of roofs components are present and properly installed.

Constant Visual Inspections:

Periodic visual inspections should be performed on the roof. Many times this can be done from the ground but inspections should be also be made from the roof itself. For safety as well as roof experience inspections should only be done by a professional. From the ground signs of problems can be detected such as missing shingles, tree branches touching the roof, holes, moss build-up, curling shingles, etc. If you suspect that the roof is failing, you should have a professional inspect it. Usually stating that a roof will last 20-25 years is true, although that estimate is for the shingles. Usually the first areas to fail on roofs are at the valleys, flashing, and around any plumbing vent pipe or chimney. Leaks can occur in these areas after approximately 10 years making constant visual inspections extremely important.

Moss On Roof Missing Roof Shingles

 

 


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Gunther Home Inspections, Inc.
Voice 585-349-3900 - Fax 585-349-3834
2767 Dewey Avenue - Rochester, NY 14616 - www.InspectNY.com
NYS# 16000005972
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