The construction of buildings has evolved to newer heights in the past few years, and so has the awareness of conserving energy. With the Kyoto Protocol signed so many years ago and increasing global awareness about climate change, even a school student is now aware of energy conservation. In any given building, its envelope is the main point of heat exchange. As much as 41% of energy might be lost from the fenestration depending on the window-to-wall ratio. If we look at a picture of a house from a thermal camera (Fig 1), we will notice that the brightest red lines, or where the heat is transferred most from, are the frames of the windows, yes, even more than the glass. Energy finds the weakest point between the walls, frames, and glass to pass from. It is apparent in the above thermal analysis, where the isothermal lines are very constant at...