The answer to 'lifespan of shingles' is that the typical lifespan of asphalt shingles is 15-30 years, depending on the quality of the shingles and the climate. High-quality, properly installed asphalt shingles can last up to 30 years in moderate climates, while lower-quality shingles or those exposed to harsh weather may only last 15-20 years.
Factors that affect shingle lifespan include the quality of the shingles, proper installation, ventilation in the attic, exposure to sun and weather, and regular maintenance and repairs. Shingles can become damaged over time from UV exposure, wind, hail, and other weather events. Proper attic ventilation helps extend the life of shingles by preventing heat buildup that can cause premature aging.