When selecting windows for a building project, what additional factor must be considered beyond performance and adaptability?

Considering the embodied energy of windows is crucial when selecting them for a building project, as it contributes to the overall sustainability of the construction materials. Embodied energy refers to the total energy required to produce, transport, and install a building material. This includes the extraction of raw materials, manufacturing processes, and the transportation emissions associated with delivering the product to the construction site.

Evaluating the embodied energy helps identify materials that not only meet performance and adaptability requirements but also minimize environmental impact throughout their lifecycle. Choosing materials with lower embodied energy supports the goals of LEED certification by promoting sustainable practices and reducing the building's carbon footprint.

In contrast, the color options of the windows or the cost of installation, while relevant to aesthetics and budget, do not directly contribute to sustainability measures in terms of energy usage. Similarly, while the availability of local suppliers is important for logistics and potentially reduces transportation emissions, it does not specifically address the energy consumed in the production of the windows themselves. Hence, focusing on embodied energy aligns the selection process with the broader goals of sustainable and responsible building practices.