Aluminium is the perfect material for architectural glazing products, and has practical advantages over all other available choices, including inherent resistance to corrosion and very low whole-life costs. Aluminium is also an environmentally friendly material and possibly one of the best options for energy saving within the construction industry. In the building sector vast amounts of aluminium are collected for recycling, with rates as high as 92-98%, and more than 50% of the energy used in aluminium production comes from hydro-electric schemes. Re-smelting aluminium saves up to 95% of the energy needed to produce primary product. The overall market for used aluminium is steadily growing so the more aluminium there is in a product the more chance it has of being recycled.