This document discusses several types of architectural membranes, including PTFE membranes made of ptfe material that are weather resistant and have long lifespans. It also describes acrylic PVC coated membranes that weigh 18 oz. per square yard and have fire retardant capabilities and a 12-year warranty. Insulated fabric roof systems use a triple layer composite of TiO2 PTFE, Nanogel Aerogel, and PTFE glass fiber interior liner. Dupont Tedlar coated membranes weigh 24 oz. per square yard, are fire retardant, and have a 20-year warranty and design flexibility.