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.


Services are tailored to the specific needs and concerns of the particular project and team.

Where remedial work is required to address building leakage or durability problems, Williamson & Associates provides services to locate and determine causes of component failures. Capabilities in corrective work include documented investigative surveys, analysis of in-place designs and systems, recommendations for remedial designs and materials, detailing, specifications, bid and contract documents, and assistance in bidding, awarding, administering and inspecting the remedial contract.