The lifespan of asphalt shingles depends highly upon the environment, but most will last up to 20 years. Moss and fungus growth buildup as well as tree debris left for extended periods of time will shorten the life span of the roof.
Attic ventilation plays a critical role in the life expectancy of your asphalt shingle roof. Most roofing contractors fail to properly calculate your roof’s ventilation needs. Here are some symptoms of improper ventilation:
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