Liyen Kan has experience in building envelope design, consultation and investigation. He is specialized in moisture migration issues and computer modeling. His expertise has been demonstrated by papers and publications on ASTM and ASHRAE. His projects have included moisture analysis and waterproofing services for museums, commercial, educational, and residential buildings. He has consulted with architects, contractors, and building owners to analyze design concepts, evaluate design defects, and develop repairs for water intrusion issues. Mr. Kan has lead more than 50 building envelope design/investigation/retrofit projects involving more than 5,00 buildings in the United States and Canada.