Thermally Broken Aluminum Windows: The Detail That Changes Performance
The Real Difference Is Hidden in the Frame Most people shop for aluminum windows by looking at sightlines, color, price, and glazing. The piece that changes performance the most is buried inside the frame. A thermally broken profile splits the interior and exterior aluminum sections with an insulating barrier, usually polyamide. Without that barrier, aluminum behaves like a metal heat bridge; with it, the frame becomes a legitimate high-performance building component. ...