The construction materials and systems for building envelopes are included in the Walls, Ceilings, Windows, and Roofs sector. Some application areas for this sector include energy efficiency, indoor comfort, and structural integrity. Sustainability in this industry is paramount because it relates to the improvement of energy conservation, waste minimization, and greenhouse gas reduction. Trends related to green building certification and the usage of ecologically friendly materials promote zero waste initiatives. The directories perform an indispensable role in linking stakeholders with sustainable companies, suppliers, and certifications, thus enabling informed A decision-making process.