> I don't know how it holds up to weather, though. It does very well. The main terminal of Denver International Airport has an enormous PTFE-coated fiberglass

> I don't know how it holds up to weather, though. It does very well. The main terminal of Denver International Airport has an enormous PTFE-coated fiberglass fabric roof. It's decades old now and has weathered hail, high winds, and Colorado sun without any significant wear that I know of. EDIT: The same product has since been used in a bunch of other stadiums and other large structures, including the Georgia Dome where it survived a near-miss by a tornado with only minor tears: https://spinoff.nasa.gov/Spinoff2009/ip_2.html https://spinoff.nasa.gov/Spinoff2009/ip_2.html > "The material is pound-for-pound stronger than steel while weighing less than 5 ounces per square foot. It offers up to 24 percent solar translucency while providing as much as 75 percent solar reflectance"