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Building Enclosure Technology and Environment Council (BETEC)

The Building Enclosure Technology and Environment Council (BETEC) is charged with encouraging optimum energy use of buildings through a better understanding of how overall, complex building components interact with each other and the environment.

BETEC members work together to share knowledge of existing and new technologies and practices, and to integrate technical programs on building safety, durability, resilience and occupant comfort with the thermal performance of building envelopes. The Building Enclosure Councils (BECs), a joint venture between the American Institute of Architects and NIBS under the aegis of BETEC, host some 4,000 members in 34 local chapters.

Energy Efficiency

To develop a sound technical and economic foundation for optimum energy efficiency in the design, construction, operation, and modification of new and existing buildings through the coordination of research, development, and verification programs


To expedite the use of existing and new technologies in building practice through improved coordination of the activities of the various components of the building community


To integrate technical programs on fire safety and thermal comfort with the thermal performance of building envelopes

Membership and Sponsorship

BETEC brings together a cross-section of public and private building leaders to solve major energy-related regulatory and technical issues. Its membership is comprised of design professionals, contractors, manufacturers, educators, and organizations. The following sponsors are a representation of that membership and have pledged their support to the initiatives of BETEC. Learn more about sponsorship opportunities.

  • Cloud Visit
  • Engineering Consulting Services
  • Guardian Glass
  • Kingspan
  • Terracon

BETEC has a diverse board representing many different aspects of design, construction, and building industry.


Stephen Shanks, CxA, BECxP, NDT Level III
Senior Consultant - Building Science Solutions
Building & Construction, Intertek

Vice Chair

Dudley McFarquhar, Ph.D., PE
Owner, McFarquhar Group Inc


Keith A. Simon, FAIA
Principal, Terracon Consultants, Inc.

Member at Large

Brian Stroik
Director of Building Enclosures, Tremco Commercial Sealants & Waterproofing

Member at Large

Justin Boone
Associate Principal & Unit Manager, WJE Associates

AIA Liaison

Cheryl Smith, AIA, LEED AP
Principal, NELSON Worldwide

Board of Directors Liaison

Paul Bertram, CSI Distinguished Member, FCSI, CDT, LEED AP, GGP
Owner, PRB Connect

Staff Liaison

Stephanie Stubbs, Assoc. AIA, PMP
Managing Director, Technical Solutions, National Institute of Building Sciences

Building Envelope Design Guide (BEDG)

Under guidance from the Federal Envelope Advisory Committee, the NIBS developed this comprehensive Building Envelope Design Guide for exterior envelope design and construction for institutional/office buildings. The BEDG is part of the Whole Building Design Guide-WBDG and is continually being improved and updated through the Building Enclosure Councils (BECs).

Building Enclosure Science & Technology–BEST™ Events

BEST events brings together building industry professionals to share information on specific performance aspects of building systems designed for high energy efficiency, good indoor climate and long-term performance. BEST combines the expertise of the National Institute of Building Sciences Building Enclosure Technology and Environment Council (BETEC) with the outreach efforts of its Building Enclosure Council (BEC) chapter network. At BEST, attendees can learn about advancements in topics ranging from fenestration, moisture control, indoor air quality to net-zero buildings, commissioning and whole systems design.


BESTfest – APR 28, 2021
This seminar brings together industry leaders and experts to discuss how the Building Enclosure Science & Technology field has changed since COVID-19 shook the world.

More than 3,000 affiliated architects, engineers, contractors, manufacturers and others with an interest in building enclosures participate in Building Enclosure Councils (BECs) around the country. The councils promote the exchange of information and encourage discussion on matters concerning building enclosures and related science, such as training, education, technology transfer, weather conditions and local issues and cases.

The National Institute of Building Sciences Building Enclosure Technology and Environment Council (BETEC) and the American Institute of Architects (AIA) signed an agreement to establish the BEC initiative on May 18, 2004. Their initial goal was to have local AIA components establish at least nine BECs by May of 2007. Since then, the program has founded 32 chapters, representing both cities and states.

Building Enclosure Technology and Environment Council (BETEC)

John Burningham CEM,LEED AP
Principal, UNVC


Janna Alampi AIA,BECxP,CxA+BE,CPHC


John Posenecker PE
Amrish Patel

Janna Alampi, AIA, NCARB, BECxP, CxA+BE
President + CEO, EPICx Studio

Past Chairs

William Babbington
Dudley "Dr. D" McFarquhar, PhD, PE

Justin Boone
Associate Principal, WJE

Brian Stroik
Performance Excellence / Quality Consultant, American Contractors Insurance Group

AIA / BETEC Liaison

Cheryl Smith, AIA, LEEP AP
Principal, NELSON Worldwide

Get Involved

Want to participate in your local BEC? Contact the BEC Chapter in your region to find out about how you join and attend meetings, Don't see a BEC Chapter listed for your area? If your city/region does not have a BEC Chapter yet, consider establishing one. Learn how.

Should you have any additional questions about the Building Enclosure Technology and Environment Council or would like to know more about the council's activities, please contact:

Staff Liaison

Stephanie Stubbs, Assoc. AIA, PMP
Managing Director, Technical Solutions
National Institute of Building Sciences

Companies & Organizations
Sponsored Events