Building Materials and Building Envelope Performance
ASHRAE Technical Committee 4.4

Upcoming TC Meetings

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Subcommittee Meetings Sunday, June 25, 2023
Location: In-Person: Tampa Marriott Waterside, Florida Salon VI (2) and Virtual 
Meeting login information: 
TC 4.4 Research 1:00 pm - 2:30 pm Eastern Time
TC 4.4 Program 2:30 pm - 3:30 pm Eastern Time
TC 4.4 Handbook 3:30 pm - 5:00 pm Eastern Time
 TC 4.4 Standards and Liaison 5:00 pm - 5:30 pm Eastern Time
Main Committee Meeting Monday, June 26, 2023
Location: In-Person: JW Marriott Tampa, Ybor Salon IV (2) and Virtual   
Meeting login information:   
TC 4.4 Building Materials and Building Envelope Performance 2:30 pm - 4:30 pm Eastern Time
Additional Information  

ASHRAE TC 4.4 is sponsoring the following seminar: 

Seminar 42: Can Mass Timber Construction be an Alternative for a Low Carbon Future Construction?


Location: JW Marriott Tampa Water Street, Tampa Bay 8

Cross laminated timber (CLT) is a mass timber material that has the potential to expand the wood building market in North America. When used in place steel and concrete, CLT can offer sustainable structural solution with lower environmental impacts. However most environmental impact assessments don’t consider variation in transportation impacts with the CLT supply chain or their end-of-life fate when calculating life cycle impacts.  The mass timber components can offer a lot of versatility in application.  Thus, this seminar provides 1) construction and development drivers for the use of mass timber and 2) latest research on hygrothermal and energy-saving potential.

Wahid Maref, P. Eng of Ontario

Seminar login information: 


Committee Chair

Alejandra Nieto

Committee Scope

TC 4.4 is concerned with the requirements and overall performance of the building envelope as it relates to: 1) heat, air and moisture related properties of building materials 2) fundamental heat, air and moisture transport processes of assemblies; 3) interactions with interior conditions and HVAC systems.


Upcoming Society Conferences

ASHRAE 2024 Winter Conference
January 20-24, 2024
Chicago, IL

Get on board with us!

If you would like to become involved with the committee, please attend one of our meetings that take place during the ASHRAE Annual and Summer meetings, or contact the Chair of the Committee. New members are always welcome!  Most of the work for the TC takes place during the subcommittee meetings, so please attend those meetings to get involved in the activities of the committee.

William B. Rose: Home and Garden Maven: NY Times article: If Winter Takes Aim at the Plumbing

William B. Rose made ASHRAE Fellow

Congratulations to William B. Rose, Research Architect at the Universality of Illinois at Urbana-Champaign on being made an ASHRAE Fellow. The Fellow Grade of membership recognizes exceptional contributions which distinguish the member. Fellow ASHRAE is a membership grade that recognizes distinction in the arts and sciences of environmental technology and is earned through achievement as a researcher, designer, educator or engineering executive. Bill is a long time member and contributor to ASHRAE TC 4.4 especially as Handbook Chair and chapter reviser. Congratulations Bill.


Handbook Chapters


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Handbook of Fundamentals: Chapter 25