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August 23, 2023
5:30pm - 6:00pm - Check-in

6:00pm - 7:00pm - Presentation

7:00pm - 8:00pm - Happy Hour

District Architecture Center

421 7th St NW

Washington, DC 20004

Closest Metro Stop:

Archives-Navy Memorial-Penn Quarter (green, yellow line)

Judiciary Square (red line)

Metro Center (blue, orange, silver, red lines)


Additional information regarding the event and the registration link can be found here

Registration Fee: AIA, Assoc. AIA, & DAC Members $15; Non-members $25; Student $0

Towards A Zero Carbon Architecture - Building Enclosures

Presented by: Stephanie Stubbs, Assoc. AIA, PMP; Tom Lenar, AIA, LEED AP; Kyung C. Yoon; Sophie Martin, PE, LEED AP, CPHC; 

Moderated by: Roark Redwood

A BEC | DC Event


It is the responsibility of every building designer, contractor, consultant, owner and developer to consider the role of embodied carbon in their project's greenhouse gas (GHG) emissions. Embodied carbon, the GHG emissions arising from manufacturing, transportation, installation, maintenance, and disposal of building materials, represents a significant portion of global GHG emissions. Quantifying and reducing embodied carbon on our building projects is an urgent task. Representatives from building design, science and technology will be coming together for a panel discussion on

  • a variety of strategies for reducing embodied carbon in building enclosure systems

  • challenges of reducing embodied carbon in building enclosure systems

  • the need for more research and development on low-carbon building materials and the development of clear guidance on how to measure and reduce embodied carbon

Learning Objectives:

After attending this course, participants will be able to:

  • Learn about the different factors that contribute to the embodied carbon of building enclosure systems.

  • Identify strategies for reducing the embodied carbon of building enclosure systems.

  • Understand the challenges of reducing embodied carbon and how to overcome them.

  • Learn about the latest trends in low-carbon building materials and technologies.


5:30PM - 6:00PM - Check-in

6:00PM - 7:00PM - Panel Presentation

7:00PM - 8:00PM - Networking and Happy Hour with Panelists 


Stephanie Stubbs, Assoc. AIA, PMP - National Institute of Building Sciences

Stephanie Stubbs, Assoc. AIA, PMP, is Vice President, Technical Solutions with the National Institute of Building Sciences. Stubbs has served as a Director for NIBS since 2009, and her former title was Director of Facility Lifecycle Management. She manages projects for a number of federal agencies, including the General Services Administration, as well as NIBS councils and joint research ventures with the AIA, such as the BRIK research portal and the Building Enclosure Councils network. Prior to joining NIBS, Stubbs worked for the American Institute of Architects for almost 30 years, serving as researcher and project manager for the AIA Research Corporation, technical editor for Architectural Technology magazine, and then as managing editor for AIArchitect newspaper and Architecture magazine. She earned her BA in Environmental Design and Master of Architecture from SUNY @ Buffalo.

Tom Lenar, AIA, LEED AP - Clark Construction Group

As Design Executive at Clark Construction Group, Tom oversees the Design Management team in Clark’s Project Development Services group. He is involved in some of the largest projects being built in the Washington DC area, and focuses on reducing the project design risk associated with development and construction. In that endeavor, Tom builds collaborative relationships with design teams that result in project documentation that is clear, complete, and coordinated such that the builder’s needs for subcontractor scope and project delivery are reflected in CD’s and that the Clark team has a more complete understanding of the project’s goals and design intent. While he advises on a broad range of technical design issues, in the pursuit of Net Zero project goals Tom helps teams connect the dots between the varied requirements of a delivered project to the early analysis and decision making that leads to successful outcomes for both embodied and operational carbon. Tom is also Director on the American Institute of Architects Washington, DC Chapter Board of Director. In his roles prior to joining Clark, his career has been defined as an architect, principal and founding partner at a local design firm, and a real estate development consultant.

Kyung C. Yoon - Simpson Gumpertz & Heger

Kyung C. Yoon, Simpson Gumpertz & Heger Project Consultant, is a Project Consultant in the Building Technology Group at Simpson Gumpertz & Heger (SGH) and serves as a Secretary for the DC Building Enclosure Council (DC BEC). At SGH, Kyung specializes in building science and in-house research, work for which he has participated: enclosure studies for embodied carbon, embodied carbon research on insulation materials, and the impact of passive house envelope systems on embodied carbon. Prior to joining SGH, Kyung practiced as an enclosure consultant at The Facade Group in Philadelphia, Pennsylvania (now part of RWDI). He earned his BS and MS in Architectural Engineering from Drexel University in Philadelphia.

Sophie Martin, PE, LEED AP, CPHC - Page Southerland Page

Sophie Martin, PE, LEED AP, CPHC is a Building Science Engineer at Page Southerland Page with a passion for supporting high performance, sustainable building design. Sophie is a Professional Engineer, LEED AP, and Certified Passive House Consultant who transitioned to Page from a prior role in building enclosure consulting and commissioning. She primarily focuses on embodied carbon analysis using a variety of tools including Tally, thermal/hygrothermal analysis using THERM/WUFI, enclosure review, daylight analysis in ClimateStudio, and LEED certification. She has worked on a variety of project types including universities, embassies and other government buildings, community centers, elementary schools, hospitals, industrial, commercial, and mixed-use. Sophie focuses on exploring the role of enclosures in building energy performance, embodied carbon emissions, and air, temperature and moisture control. Sophie is the Events Liaison for the Building Enclosure Council.


Roark Redwood - National Institute of Building Sciences

Roark Redwood, our moderator, is the Senior Vice President of Technical and Government Solutions with the National Institute of Building Sciences. Reporting directly to the President and CEO, Redwood is responsible for the overall performance of the Technical and Government Solutions department by ensuring innovative execution and delivery of services, completing programs, and expanding new business development opportunities. Redwood is an architect with 23 years of experience, delivering federal, cultural, leisure and entertainment, higher education, mixed-use, aviation, industrial, commercial, and residential projects. He is an experienced leader of diverse teams of professionals for a variety of clients and project types, complexities, budgets, and delivery methods. From a new Universal Studios theme park in Beijing, China worth more than $3 billion to a U.S. Embassy in Burkina Faso, Africa, to IDIQ contracts for the Architect of the Capitol, Smithsonian Institution, National Archives and Records Administration, and U.S. Army Corps of Engineers, Redwood excels at leading complex, high-risk, and high-profile endeavors. He is passionate about the advancement of building science and technology to improve the built environment and committed to improving lives through collaboration to integrate science into the built environment. Redwood actively volunteers, including as a Director on the American Institute of Architects Washington, DC Chapter Board of Directors, as the Society of American Military Engineers Architecture Community of Interest Chair for Professional Education Programs, and serving on National Council of Architectural Registration Boards (NCARB) committees.

Additional information regarding the event and the registration link can be found here

Registration Fee: AIA, Assoc. AIA, & DAC Members $15; Non-members $25; Student $0

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