Wheaton Sprague is chartered as a professional engineering company. We are a group of engineers, architects, consultants and designers with a focus on building envelopes, facade, curtain walls and cladding systems. We provide design, engineering and consulting services for the Building Envelope and Curtain Wall Industries to clients throughout the United States and in some off-shore markets.

We have two divisions: 

Building Envelope ENGINEERING Division: Full-service engineering for exterior cladding systems including glass curtain wall, panel, stone and architectural specialty components.

Building Envelope CONSULTING Division: Expert consulting for building envelope, building façade and cladding systems including schematic design, design development and construction documents, specification development, construction administration, testing and witnessing of testing in laboratory or field, forensic investigation of building envelope failures or defects, expert witness testimony, thermal design and analysis, observation, peer review, blast / impact assessment, remediation and assessment services and other related services.