Dr. James L. Hoff is the President and CEO of TEGNOS Research, Inc. and has over 30 years of experience in the building materials industry. He has also previously worked for the Center for Environmental Innovation in Roofing where he served as a researcher and Vice President.
Fixr.com Editorial Methodology
Fixr.com partners with a wide variety of experts in different fields of home improvement and design: general contractors, interior designers, construction material manufacturers and DIY experts, among others. Fixr.com editors work closely with them to ensure our information is accurate, up to date, and based on the latest research. Experts answer questions, review cost information or add advice and suggestions based on their experience and knowledge of their specific area of expertise. We also check specialized publications, cost studies, and U.S. government reports. Learn more about our editorial process and sources.
