Precast Concrete Panel Exterior Wall Systems – Detailing Challenges, Best Practices and Lessons Learned

2 modules


Course Length
1 hour

Self- Paced

$95 - 145


This presentation initially took place at the 2020 Building Enclosure Symposium.

Precast concrete exterior wall panel systems are popular in many urban and suburban areas, largely due to efficiency in terms of installation/erection, cost, and simplicity. Lots of options are available to design and construction professionals in terms of panel sizes, layouts, and architectural finishes and features. Options for anchoring and flashing/sealing glazing systems are limited, and problems can result if details are not carefully developed. Other challenges can include reliably sealing panel-to-panel joints, transitioning to adjacent roofing, waterproofing and rainscreen cladding systems, and coordination among trades. This presentation will describe various challenges related to precast concrete exterior wall system design and construction and will include lessons learned and best practices developed from past projects.

Derek B. McCowan

Simpson Gumpertz & Heger, Inc. | Waltham, MA

Derek McCowan has extensive experience in designing, investigating, and rehabilitating building enclosure systems of contemporary and historic structures, as well as providing construction-phase and performance testing services. He frequently consults on large and complex projects and specializes in exterior wall cladding and glazing systems, sealants, roofing, waterproofing, historic restoration, and enclosure commissioning. He writes and presents frequently on building enclosure topics, has been a guest lecturer and evaluator at various local universities, and is an officer of ASTM Committee C24, Building Seals and Sealants.

Holbrook C. Phelan

Simpson Gumpertz & Heger, Inc. | Waltham, MA

Holbrook Phelan is a project manager with national engineering firm Simpson Gumpertz & Heger Inc. (SGH). She has a background in civil engineering, construction management, and institutional construction. Phelan has consulted on dozens of old masonry building restoration and preservation projects for various architect and university clients, including working on multiple iconic buildings of great importance to the owners and surrounding communities. She frequently performs pre-design assessment and exploratory work, develops restoration design drawings and specifications, and provides construction inspection, administration, and testing services.


By completing/passing this course, you will attain the certificate Certificate with IIBEC and AIA Logos

Learning Credits

Precast Concrete Panel Exterior Wall Systems – Detailing Challenges, Best Practices and Lessons Learned - Recording
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Excellent presentation. Concepts were clear and well presented.
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