by Helen Sanders
In the United States, we have a façade-retrofit problem—or opportunity—depending on how you look at it. According to the U.S. Department of Energy, about 2.4 million commercial buildings, approximately 40% of the commercial building stock,
Lisa Heschong, renowned daylight researcher and author of “Visual Delight in Architecture,” gave a presentation at the Fenestration and Glazing Industry Alliance’s (FGIA) Virtual Summer Summit to update us on new research further demonstrating the
Last month, I reviewed the important differences between U-factors related to windows: The entire fenestration assembly, the frame, the edge of glass (EOG), and the center of glass (COG). This month, I examine how the
I am often asked why glass U-factors don’t include the impact of the spacer. The difference between the center-of-glass U-factor and the full fenestration assembly U-factor is critical to understand, and mixing the two can