Thermally broken windows simply means to add an insulator to window frames and doors to drastically reduce their ability to conduct heat and cold. Standard Aluminium is a good conductor of heat and cold. So, this can potentially undermine the performance of Aluminium framed windows and doors. Therefore, a thermal break needs to be added to the frame. Thermal break technology features a reinforced polyamide bar between the inside and outside aluminium profiles, creating an insulated barrier within the window frame. This will conduct heat, cold and noise much more slowly than standard Aluminium. So, while double glazing is seen as the ultimate system for energy efficiency, it can be significantly improved by adding thermal breaks to create high performing energy efficient windows and doors.