By: Todd Watson
Thermally improved fenestration products offer the benefit of separating the interior portion of the window or door frame from the portion exposed to the exterior. The benefits of such a configuration include decreased energy loss and enhanced resistance to the formation of condensation. For optimal performance, the portion of the frame containing the low conductive material that separates the interior and exterior portions of the frame must be placed in line with, or perhaps behind, the wall insulation or; better still, the full edge of the window should be insulated. Oftentimes neither of these measures is executed.
