n place of glass, ethyltetrafluoroethylene (ETFE) is often used to form pneumatic structures of "cushions". These constructions can be used for roofs or other architectural structures. Main advantage is the much lower weight compared with glass.
The ETFE is a modified copolymer which is extruded into a thin film. The material is anti-static, self-cleaning and easily repairable (using ETFE tape CMC 77700 in the event of puncture). The material is unaffected by UV light, atmospheric pollution or weathering and extensive testing has shown an anticipated life expectancy in excess of 40 years (used e.g. for green houses). The material is not burning an recyclable.