Jim Hoff is an experienced executive and researcher in the building materials industry, retiring as vice president of technology for Firestone Building Products in 2007 after 23 years of service. Dr. Hoff currently serves as Vice President, Research for the Center for Environmental Innovation in Roofing in Washington, DC and as President of TEGNOS Research, Inc. a consulting organization dedicated to expanding understanding of the building envelope. Dr. Hoff holds undergraduate degrees in psychology and architectural design as well as a Masters and Doctorate in management, and he has published numerous articles on building system performance, quality management, and life cycle analysis.