Williamson & Associates is a professional consulting firm specializing in the watertightness and durability aspects of commercial building exterior construction.  The firm provides a variety of consulting services with this focus, from review of Architectural drawings for new construction projects to investigations of existing buildings in order to determine the causes of leakage or distress in exterior wall and roofing assemblies.  Our headquarters is in Atlanta, GA, and we have a branch office in Orlando, FL.  Our Clients and projects are throughout the United States.