Mr. Doelp joined Simpson Gumpertz & Heger Inc. (SGH) in 1984. He specializes in investigating and designing all types of building-envelope systems, including plaza waterproofing, below-grade waterproofing, roofing, and exterior wall systems. His projects have also included analyzing building moisture problems and leakage problems, as well as repairing and renovating structures. He consults with Architects and Owners on the design and construction of new building enclosures. Mr. Doelp is a Registered Roofing Consultant and a member of the American Society of Civil Engineers and several honor societies.