April Luncheon: Specifying Building Envelopes for Thermal Performance

Presented by David Fookes, PEng with Evoke Buildings Engineering
March 30, 2022 | By Daniel Wong

Construction Specifications Canada

Vancouver Chapter
Specifying Building Envelopes for Thermal Performance
Presented by David Fookes, PEng with Evoke Buildings Engineering
In Person or Zoom 
Thursday, April 14, 2022
The thermal performance of the building envelope is becoming increasingly important with the implementation of the BC Energy Step Code, absolute TEDI targets within Part 10 of the BCBC and VBBL and high-performance building standards like Passive House and , LEED  all helping BC meet its goal towards buildings being net zero energy ready by 2032. 

As absolute energy and TEDI targets become more stringent, the heat loss through the building envelope becomes increasingly important, and determination of the real or effective heat flow through the envelope necessary. Thermal performance of the building envelope has evolved from the prescriptive requirements of nominal R20 walls and R40 ceilings to the use of effective R-values and continuous insulation being specified in building and energy codes to account for thermal bridges that were ignored in the past.   Two- and three-dimensional, finite-element, heat-flow calculation software is also readily available and used by practitioners to calculate effective R-values. Resources like the BC Building Envelope Thermal Bridging Guide are also available to provide effective thermal values of various construction assemblies and details. 

Specifying the building envelope thermal performance of assemblies requires an understanding of how building thermal performance values were calculated and used by the architect, energy and envelope design professionals to meet the building’s TEDI or other energy target requirements.  Knowing what specific material components and their configuration, layout or attachment is also necessary in order to determine if the assembly meets the project’s thermal requirements. All the various architectural wall, roof, glazing and sometimes below grade assemblies need to be identified and thermal values specified so appropriate thermal performance values can be identified for each assembly to allow constructors the ability to provide components and assemblies to meet the buildings thermal performance requirements. 
Learning Objectives
  • This presentation will outline and provide guidance and insight on how to identify, specify and review the thermal performance of building assemblies and components to meet increasingly stringent energy requirements. 
  • Attendees will be able to locate resources such as the BC Building Envelope Thermal Bridging Guide
  • Become aware of how the more stringent requirements related to building performance of wall assemblies rely on an understanding of thermal bridging.
David Fookes, PEng with
Evoke Buildings Engineering

David is a professional engineer that specializes in building envelope design and analysis. He brings 25+ years of experience and extensive knowledge of numerous building envelope engineering specialties on a variety of building types and occupancies. His envelope engineering experience includes various glazing, cladding, roofing and below grade systems with specific expertise in air, moisture and thermal control  to meet BC’s and Vancouver’s ongoing requirements
David has extensive knowledge in the thermal requirements of buildings having worked on several high-performance buildings achieving LEED, Passive House, Net Zero and Living Building Challenge.
Executive Hotel Hydra - 475 Howe Street
11:30 am - 12:30 pm    Luncheon (plated lunch)
12:15 - 12:30 pm          Chapter Business
12:30 - 1:30 pm            Guest Speaker Presentation
In Person Option   
$40.00 plus GST for pre-registered CSC members / Association Executive Directors
$50.00 plus GST for non-members

$20.00 plus GST for pre-registered CSC members / Association Executive Directors
$30.00 plus GST for non-members
There is a pay parking facility across the street
Register through Karelo:   ONLINE REGISTRATION
Pre-Registration ends at 4:00 PM on Wednesday before the meeting.

Walk-ins welcome provided there is room - At the door by cash, cheque or by VISA credit card only.      

If you feel sick or have any flu like symptoms please do not attend and stay home. If you still wish to attend/view the presentation please let the organizer know, and we can forward on the zoom link. Masks are recommended to be worn during the presentation but under provincial law no longer required.

AIBC Members will receive 1 Core LU (Learning Unit) for attending this event.
QUESTIONS?    Contact John Alley  -  604-218-1308
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