Coordinator(s)

  • Lin Wang, NRC, Canada
  • Nickolaj Feldt Jensen, Aalborg University, Denmark

Objectives and Scopes:

The Commission’s objectives are:

  • to explore the phenomena of heat, moisture, air and salts transfer in buildings, components and materials
  • to formulate laws governing the physics involved
  • to define, measure and discuss the hygrothermal properties of materials and building components
  • to explore the ventilation and hygrothermal behavior of buildings
  • to apply the acquired knowledge to the design, execution and maintenance of buildings
  • to transfer research information to practice

Current Work Programme (2025 – 2028):

There will be annual Commission Meetings in support of information dissemination. Each such meeting will result in a meeting report. The Commission’s current work prgramme is focused on probabilistic assessment or passive energy conservation measures under a changing climate in an urban setting.

Planned Output:

  • 2025 – 2026: A systematic review on probabilistic assessment of passive energy conservation measures under a changing climate in an urban setting
  • 2026 – 2027: A database for hygrothermal properties of bio-based insulations and mass timber materials
  • 2027 – 2028: Multi-criteria performance assessment of bio-based insulation walls and mass timber constructions

External Relations:

W040 has established Liaisons with:

  • ASHRAE 90.1 – Building envelope subcommittee
  • ASHRAE 189.1 – Standard for Design of High Performance Green Buildings Except Low-Rise Residential Buildings
  • ASHRAE 189.3 – Design Construction and Operation of Sustainable High Performance Health Care Facilities
  • ASTM E3054/305M-16 – Standard Guide for Characterization and Use of Hygrothermal Models for Moisture Control Design in Building Envelopes
  • IEA – International Energy Agency
  • ISO/TC 163/SC 2 – Thermal Insulation and Calculation Methods.
  • CIB W040 encourages the Journal of Building Physics

Membership:

Members of this Working Commission have to be either a Representative of a CIB Member Organization or an Individual CIB Member. The Membership of persons who do not participate at two successive Commission Meetings will in principle be terminated.

Information on the full list of CIB Working Commissions and Task Groups is available here.