This licensed contractor and building envelope consultant has over 30 years of experience in sheet metal, roofing, and waterproofing systems, with a career focused on the design, fabrication, and installation of exterior building components. He has served as owner and president of sheet metal contracting companies, overseeing operations, contract negotiations, estimating, project management, and supervision of shop and field personnel, and is trained in layout, fabrication, welding, and finishing of sheet metal products. His expertise includes composite cladding systems, metal siding, metal roofing assemblies, flashings, gutters, downspouts, fascias, soffits, skylights, louvers, expansion joints, and specialty architectural sheet metal components across commercial, institutional, medical, public works, and military projects. As an independent consultant and expert witness, he advises on proper detailing and installation of roofing and waterproofing systems, works with design professionals and forensic investigators to evaluate and correct flashing and moisture intrusion defects, and has participated in building forensics and restoration involving historical structures. His case experience includes construction-related disputes, including matters involving homeowners associations. He holds a Bachelor of Science degree in Aerospace Engineering, is certified as an Engineer-in-Training (EIT), and has held California State contractor licenses in sheet metal and related classifications.