National Home Inspector Practice Exam

The typical lifespan of asphalt shingles is most commonly recognized as being between 15 to 30 years. This range reflects the durability of asphalt shingles, which are one of the most popular roofing materials due to their cost-effectiveness and ease of installation. Factors contributing to the lifespan include the quality of the shingles, the installation process, local climate conditions, and the maintenance of the roof. For example, higher-quality asphalt shingles, such as architectural shingles, often have a longer lifespan compared to standard 3-tab shingles.

In terms of longevity, it's important to consider that while asphalt shingles can last up to 30 years or even slightly longer under optimal conditions, they generally do not reach the longer lifespans associated with other roofing materials like metal or slate. Therefore, the choice indicating a lifespan of 15 to 30 years accurately aligns with industry standards and the practical performance of asphalt shingles.