INSULATION ENHANCES THERMAL PERFORMANCE Birdair Inc. and Cabot Corp. have released Tensotherm, a composite roof system that offers the grace and flexibility of tensile roofing fabrics with the added benefits of an insulation layer. The Nanogel translucent aerogel insulation layer, which is sandwiched between two layers of fabric membrane, has an air content of 95 percent. Its small pore size traps air to prevent heat loss and solar heat gain. (800) 622-2246 /