Distorted Reflection insulated glass windows
I'm replacing the insulated glass inserts in my aluminum frame windows because of fogging. (North Texas) They are not low-e glass. When observed from the exterior, my existing windows reflect a true undistorted reflection, which I like. I've had two of the 23 windows replaced recently; 21 to go. Not low-E. The replacement insulated glass have a distorted reflection. Almost as if the glass is deflected by either a vacuum or pressure between the two panes. Most of the homes built in this area the past 10 or 15 years contain windows with distorted reflections, including half-million dollar homes. Is there a process for making insulated glass that does not deflect the panes? If not deflection, what causes the distorted reflection?