At first blush, the chart looks very complicated. There are layers of axes and curved reference lines. However, a closer examination reveals that the chart is conveying the answers to two related question
On Demand A roof is more than the surface that keeps water out of buildings; it’s the first line of defense from the elements, whether it’s rain, snow, wind, hail, heat, or sun. Roof systems are a complex part of the building enclosure with many components that serve as a means to control water, air, vapor, and heat transfer.
