Which factor can significantly affect a roof's lifespan?

The type of roofing material used is a crucial factor that significantly affects a roof's lifespan. Different materials have varying durability, resistance to weather elements, and maintenance requirements. For instance, asphalt shingles typically last 15-30 years, while metal roofing can endure for 50 years or more. Slate or tile roofs may last even longer, up to a century with proper maintenance. The material determines how well the roof can withstand factors like extreme temperatures, UV exposure, moisture, and wind. Thus, selecting the right roofing material is essential for maximizing the lifespan and performance of a roof.

While the color of the shingles, the presence of solar panels, and the design of the roof can influence aspects like energy efficiency and aesthetic appeal, they do not have as profound an impact on the overall lifespan as the choice of roofing material does.