Skyfix & Co. Ltd

Thermally broken windows or a thermal break is the term used to describe placing an insulating barrier between the outside and inside portions of the window frame and between the 2 panes of Glass in a double glazed window. (The picture displayed above illustrates the process with the thermal break shown in red.)
Heat naturally wants to flow from a warmer space to a cooler space. In terms of windows and doors this means in summer heat wants to flow from the hot exterior of your home to the cooler interior. In winter the process is reversed in that the Heat from inside your warm home TRIES to escape to the cold exteriors. Thermal Break insulation is therefore designed to provide resistance to heat flow. Overcoming this natural process means of course incurring energy COSTS via heating or cooling to retain or restrict heat.