Webday Wednesdays - Two Wall Assemblies for Passive House Cold Climates

 Registration is closed for this event
For the month of May, the RAIC is pleased to present a weekly series on the subject of Advanced Building Envelopes.



Two Wall Assemblies for Passive House Cold Climates
Date: May 29, 2019
Presenter: Stephen Pope

The Passive House standard is growing in attractiveness to owner-operators for its ability to provide durable buildings that are economical to operate and provide high-quality indoor environments. The standard advocates for the use of Passive House certified assemblies and equipment. Arising from the European experience, most Passive House assemblies are certified for the Cool-Temperate climate zone. This is fine for Canadian markets such as the Greater Toronto and Hamilton Area, but not Montreal, Ottawa, or Edmonton, which are in the Passive House Cold Climate zone. Assembly and equipment performance requirements increase substantially from the Cool-Temperate climate to the Cold climate, especially for windows. Elegant European enclosure systems are Passive House certified for the Cool-Temperate climate, while isolation clips have become a popular way of adjusting conventional North American assemblies to meet the Cool-Temperate climate requirements. These don’t satisfy the Cold climate comfort requirements and may prevent the building from achieving its heating performance target. To provide good thermal control in the Cold climate zone simpler, and thicker assemblies deliver the goods. Massive assemblies such as ICF walls with supplementary insulation, and exterior hung Larsen Truss systems offer good thermal control for the cold climate environment.

At the completion of this session, the participant/learner will be able to:

  • Differentiate the Passive House cold climate requirements from the cool-temperate climate requirements.
  • Identify Canadian cities in the Passive House Cold Climate, and find one interesting anomaly.
  • Design two types of Passive House Cold climate compliant wall assemblies

Continuing education learning hours: 1 credit

Stephen has a comprehensive understanding of whole building performance arising from almost 20 years as a researcher in sustainability for commercial buildings at Natural Resources Canada (NRCan). On leaving NRCan Stephen focused on building science allowing his skills to range from enclosure detail analysis with THERM to community energy planning using Canadian building archetypes energy models. With ASHRAE TC 7.1, Stephen co-authored the revised 2019 HVAC Applications Handbook Chapter on Integrated Building Design and Integrated Project Delivery. This work carries forward the experience of the NRCan C-2000 Program for Advanced Commercial Buildings, which Stephen managed in the early 2000s.

REGISTRATION DEADLINE: Monday, May 27, 2019, at 5 p.m. ET

$25 for RAIC members, plus applicable taxes.
$30 for non-members, plus applicable taxes.

SCHEDULE: The Webinar will take place on Wednesday, May 29, at 1 p.m. ET in English.
The Canada-wide schedule by time zone is:









 10 a.m.

 11 a.m.

 12 noon

 1 p.m.

 2 p.m.

 2:30 p.m.


 11 a.m.

 12 noon

 1 p.m.

 2 p.m.

 3 p.m.

 3:30 p.m.

More information, including online access instructions and a PDF copy of the slides will be sent to you by email on the Monday prior to the Webday webinar. 

May 29, 2019 1:00 PM   through   2:00 PM
Event Fee(s)
Event Fees (GST) $ 30.00 + $ 1.50 Sales Tax
Event Fees (Ontario) $ 30.00 + $ 3.90 Sales Tax
Event Fees (Quebec) $ 30.00 + $ 4.49 Sales Tax
Event Fees (HST) $ 30.00 + $ 4.50 Sales Tax

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