This Steel joinery system which uses high-quality insulating bars as thermal breaks in the steel, which still retains a high degree of rigidity and a low construction height. These insulating bars mean that this system reduces heat loss through the joinery, as the external side of the steel is not directly connected to the internal side. This in combination with an insulating glass will help to eliminate one of the major areas of heat loss in the home. The Janisol profiles, the system we use, is a flush-fitted door profile series which lends itself to aesthetically and structurally complex single and double leaf doors or windows. Please visit www.steelguard.co.nz to learn more about this product or call one of our skilled estimators who can help you make the best decision based on your needs.