Aluminum is widely used in building materials due to its lightweight, high strength, and corrosion resistance. It's utilized in window frames, doors, curtain walls, and roofing systems for its durability and energy efficiency. Aluminum's malleability allows it to be shaped into various forms, making it ideal for facades and decorative elements. It's also used in structural components like beams and columns, and in electrical wiring due to its excellent conductivity. Additionally, aluminum's sustainability makes it a preferred choice in green building practices, as it's recyclable and has a low environmental impact.