For over 20 years, Trinity|ERD has maintained its reputation as one of the most experienced, innovative and knowledgeable building envelope consulting and engineering firms in North America. We provide services including building envelope investigation, design / specification, testing, construction observation, litigation support, and system / product development to a wide variety of clients.

With three offices and a full-service testing laboratory to support our clients, Trinity|ERD is able to provide whole roofing and waterproofing solutions to a range of issues related to the exterior building envelope.

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Contact Us by phone at (206) 467-0054 or at email info@trinityerd.com

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Subscribe to the Trinity | ERD newsletter "Pushing the Envelope: A Monthly Journal of Issues Concerning Building Design, Science, and Litigation."

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