Williamson & Associates, Inc. is a professional consulting firm specializing in construction technology with a primary focus on the weathertight envelope of buildings. Since its inception in 1967, the firm has provided technical assistance to the design and construction communities on a national basis. Our clients consist of building owners, property managers, architects, contractors, lenders and other industry members. Within the field of exterior weatherproofing, Williamson & Associates is capable of providing complete building exterior consulting services on new or existing facilities.