David Campbell is a Vice President and Senior Architect with Inspec, where he has been employed since 1994. He is Supervisor of the Walls/Windows/Waterproofing Group. He is a Licensed Architect, an accredited Green Roof Professional and one of only 2 Registered Waterproofing Consultants in Minnesota. He has over 38 years of experience. Mr. Campbell also created and teaches a course on Building Enclosure Design and Construction at the University of Minnesota. As an Architect, Mr. Campbell has been involved in the design of a wide variety of building types. While at Inspec, he has received numerous awards for his work in failure investigation and design, and has received The Richard M. Horowitz Award from IIBEC (formerly RCI, Inc.) He has been a guess critic at the U of M School of Design, gives continuing education talks, and provides expert testimony in litigation cases.