Fenestration Simulation Software Training: Computer Simulation of Fenestration Products Using Berkeley Lab WINDOW and THERM - Canada (Toronto)


The use of finite element analysis to determine heat gains/losses from fenestration products (windows, doors, skylights, etc) is very prevalent for research and design, as well as determining performance for meeting building code requirements.

This two-day instructor led course explains how to accurately use readily-available software to simulate the thermal performance of fenestration products. Participants will learn to setup and properly use Berkeley Lab WINDOW and THERM for determining a fenestration product’s U-factor, Solar Heat Gain Coefficient, Visible Transmittance, and Condensation Resistance.


Course Topics

  • Performance Values
  • Codes, Test Methods & Standards
  • Simulation Process: Berkeley Lab WINDOW
  • Simulation Process: THERM
  • Simulation Process: Putting it all Together


Upon completion of this course, participants will be able to:

  • Describe the factors that contribute to overall performance
  • Identify building codes and standards, and test methods related to fenestration software
  • Properly use the simulation process software, including Berkeley Lab WINDOW and THERM
  • Navigate and use the menus, toolbars, and libraries in these programs

Please note – this is a computer-based training and there will be many class exercises to be completed during the training so you will need to bring your own laptop. The software of Berkeley Lab WINDOW and THERM must be downloaded prior to the start of the class. The latest versions of WINDOW (7.5) AND THERM (7.5) can be downloaded for free from LBNL at the following link: https://windows.lbl.gov/software/

No previous training is required but review of the NFRC Simulation Manual (www.nfrc.org) is a very helpful guide illustrating and outlining the creation of glazing systems in Berkeley Lab WINDOW and modeling frame/sash components in THERM.

Target Audience

  • Architects
  • Building Developers
  • Code Developers
  • Construction Industry
  • Consultants
  • Fenestration Manufacturers
  • Specification Writers

    Continuing Education Units (CEUs)

    • 1.3 IACET CEUs; contact your local jurisdiction for CEU recognition.
    • This course is AIA CES Approved. AIA members will receive 16 HSU Learning Units for participating in this instructor led training.
    • Admissible course for architect continuing education in Canada




    Ian Franklin is NFRC Certified Simulator and PHIUS Blue Path Simulator at UL Cleb.  As a thermal simulator he worked on a wide variety of residential and commercial fenestration products.  He has also been involved in R&D projects for different building products.  He has over 20 years of experience in the construction industry including owning and operating his own consulting firm.  He has a great passion for sharing knowledge and techniques with his peers.   

    Ian Franklin est simulateur certifié NFRC et simulateur PHIUS Blue Path chez UL Cleb. En tant que simulateur thermique, il travaillé sur une grande variété de produits de fenêtrage résidentiels et commerciaux. Il a également été impliqué sur des projets de R & D pour différents produits de construction. Il possède plus de 20 ans d'expérience dans l'industrie de la construction, notamment en tant que propriétaire et exploitant de son propre cabinet de consultation. Il a une grande passion pour le partage des connaissances et des techniques avec ses pairs.

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    Time Requirement


    Instructor-Led 2 days

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