Curtain Wall



Curtain wall systems must meet a variety of performance requirements to achieve the desired separation between inside and outside, while keeping the system as light and transparent as possible. SGH’s structural and building enclosure design and analysis capabilities enable us to provide complete and integrated design, investigation, and rehabilitation services. With decades of experience in design and forensic evaluation of curtain wall systems, we deliver reliable solutions and help our clients understand and remedy any potential risks posed by unusual design features.




SGH has experience with point- and cable-supported, structural glass, modular/unitized, traditional, and modern systems, as well as custom concepts with distinctive three-dimensional geometries.


Our clients include architects who seek reliable and durable curtain wall systems that achieve their design visions, contractors and manufacturers with a vested interest in efficient and cost-effective assembly, and building owners who want high performance and durability while limiting maintenance. SGH’s curtain wall consulting services include the following:

  • Design consulting for new unitized, stick-built, point-supported, and structural glass curtain wall systems

  • Energy and thermal analysis of curtain wall systems and their interaction with surrounding construction and HVAC systems

  • New and remedial design and peer reviews of glazing, curtain wall systems, supporting structures, and other components

  • Monitoring of manufacturing, fabrication, and installation

  • Laboratory and field services, including performance testing, failure analysis, and structural evaluation

  • Forensic investigation of malfunctions, including glass breakage, excessive air or water penetration, anchorage or structural failure, material degradation and incompatibility, and excessive movement

  • Expert testimony in dispute resolution


SGH works to advance curtain wall technology. Highlights of our industry contributions include the following:

  • Taking a leadership role in industry organizations and participating in

  • development of industry guidelines at the national and international levels

  • Advancing investigative methods for testing air infiltration, water penetration, and materials

  • Presenting at leading universities and trade conferences

  • Contributing to major technical publications