What does the term "lifespan" refer to in the context of LEED materials?

In the context of LEED materials, the term "lifespan" specifically refers to the expected duration of effective use of materials or products without significant deterioration. This concept is crucial because it influences the sustainability of the materials selected for a project. A longer lifespan means that materials will perform effectively over time, reducing the need for replacements and minimizing waste, which is a key principle of sustainable design.

By focusing on materials that provide durability and longevity, projects can achieve better resource efficiency and promote sustainability. This encourages the selection of high-quality materials that not only minimize their environmental impact but also contribute to the overall resilience and lifecycle performance of the building.