What is the typical lifespan of asphalt shingles?

The typical lifespan of asphalt shingles is generally accepted to be between 20 to 30 years. This range is reflective of the shingles' quality, the environment in which they are installed, and how well they are maintained throughout their lifespan. Various factors, such as extreme weather conditions, installation quality, and the type of asphalt shingle used (three-tab versus architectural) can significantly influence longevity. Architectural shingles, for example, are designed to offer greater durability and may last closer to the upper end of that range. In contrast, basic three-tab shingles might lean towards the lower end of the lifespan estimates. Recognizing this variability helps homeowners make informed decisions regarding roof maintenance and replacement planning.