In summary, the lifespan of asphalt shingles can vary widely based on several factors, including the type of shingles, installation quality, climate, and maintenance efforts. Typically ranging from 15 to 50 years, homeowners should remain proactive in monitoring their roofs and conducting regular maintenance to maximize their investment. If you're unsure about the condition of your roof, it's always best to consult with a professional to ensure it remains in good health for as long as possible. With proper care and attention, asphalt shingles can provide reliable protection for your home for many years.