How long will this roof last? This is one of the most frequently asked questions during a home inspection.  And the answer is not so simple.  Several factors combine to affect roof deterioration. These include ultraviolet radiation from the sun; temperature or temperature extremes in the area; inadequate ventilation; exposure to wind, snow, ice and rain; and foot traffic on the roof. Darker color shingles may have shorter service lives than shingles of a light color.

Here are some mean life estimates for various roofing materials:

Slate 60.3 years
Clay Tile 46.7 years
Asphalt Fiberglass shingles 17.7 years
Asphalt organic shingles 14.7 years
EPDM rubber 14.2 years

13.8  years

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