If you are staring through a milky haze in your living room, you are not looking at the weather; you are looking at the corpse of a dead Insulated Glass Unit. As a master glazier… 

The Hard Truth About Window Performance I pulled a vinyl window out of a house in Chicago last October and the header was completely black with rot. The structural integrity was compromised because the previous… 

The Physics of the Fog: Why Your Windows Are Failing A homeowner called me in a panic last winter because their expensive new windows were sweating. I walked in with my hygrometer and showed them…