Susan Herrenbruck is the executive director of the Extruded Polystyrene Foam Association (XPSA), a trade association representing manufacturers of XPS insulation products and its raw material suppliers. She can be contacted via e-mail at office@xpsa.com. For more information, visit www.xpsa.com.
Extruded polystyrene insulation (XPS) has unique properties that differentiate it from other types of foam plastic insulation and therefore make it ideal for a number of roof designs.
The demand for energy conservation has been a catalyst for code change in many parts of the country. Concerns for the environment have led to calls for the use of more sustainable roofing systems - from original application to reroofing and disposal.