Mr. Kempthorne has over 3 decades of experience in the design and analysis of the building envelope. A career which began in the installation of building waterproofing materials as a Union Roofer. His installation knowledge base was with over 50 water protection systems. Mr. Kempthorne has worked for major waterproofing manufacturers throughout his career, Grace, Tremco, Thoro, Polyguard and Ply-Dek and brings a wealth of industry knowledge to the consulting industry. In 2000 Mr. Kempthorne entered the consulting industry working in the design and restoration of structures. His work has carried him throughout the United States, Canada, Central America, South American, Caribbean Islands and the Middle East.