The main advantage of aluminium windows is the slimline frames materials inherent strength. This enables designs in a contemporary styling, showing off maximum glass area which in turn provides more light and increased viewing areas. The strength of aluminium makes it ideal for large glass areas such as sliding patio doors. Aluminium window frames are also virtually intruder proof and ideal for use in bi-folding doors, a popular feature for a contemporary home design. Additionally, windows and doors using aluminium never absorb water, rot or rust.