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4 Half Days


Oct 18, 25, Nov 1, 8, 2024


10:00AM - 2:00PM

An intensive workshop to ground you in how buildings work.

Developed by experts using a building science framework.


Live Online


  • STUDY REAL LIFE EXAMPLES and scenarios

  • DISCUSS YOUR OWN EXPERIENCES and projects and get advice

  • Uses the chba builders' manual as a reference

  • One free exam rewrite included


In this HCRA-approved workshop, you will learn about construction technology using a building science framework. You will study real life examples and discuss your own experiences and projects in a small group setting. The learning material will be supplemented with various instructional videos customized to the needs of the group.

Learn about the control of heat loss, air leakage, and moisture movement in buildings and learn how to avoid common defects in construction. You will be introduced to construction technology, building science theory and practice. The course will use the Canadian Homebuilder Association Builders’ Manual as a reference.

Course objectives

By the end of the workshop, you will be able to:

  • Understand building science and its effects on building durability and occupant comfort

  • Understand envelope and mechanical systems

  • Discuss approaches to improving indoor air quality

  • Explain the “House-as-a-system” concept

Discuss Controlling Heat Loss:

  • Describe the heat loss through above and below grade assemblies

  • Identify the difference between nominal and effective thermal resistance

  • Find the thermal resistance associated with air films, air spaces and common building materials

  • Calculate conductive heat loss through building assemblies

  • Calculate effective thermal resistance

  • Calculate heat loss through windows and predict condensation potential in building assemblies

Discuss Air Leakage and Indoor Air Quality:

  • Identify why controlling air leakage is important in buildings

  • Describe how air moves through an enclosure and the problems it can cause

  • Describe air sealing approaches

  • Identify materials that can be used as a part of an air barrier system

Discuss Moisture Control:

  • Identify and understand first and second planes of protection

  • Describe drainage planes

  • Provide details for moisture control (vapour, capillarity, bulk water, snow, and ice)

  • Use psychrometrics to understand air and water vapour mixtures





Michael Lio is Ontario’s foremost Part 9 expert. He has trained builders, building officials, and designers across Canada. His company has prepared the background analysis for the energy efficiency requirements of the Ontario Building Code since 1987. Michael is a professional engineer who has consulted on projects and publications across North America relating to housing, energy efficiency and sustainability. His studies have supported the development of the Energy Star for New Homes program in Ontario, the EnerGuide Rating System, and the new R-2000 Programs. He works with builders across Ontario to resolve building code issues. He taught in the architecture program at Ryerson University and at the University of Toronto for 27 years.




Dave has over 30 years experience in the residential construction industry in a variety of positions from hands-on trade experience to policy, Code and Tarion development. Dave is a former Tarion Operations Manager, Director of Industry Relations for the Ontario Home Builders’ Association and most recently Supervisor of Quality Assurance for Brookfield Residential. He has been involved in every Building Code change process with the Ministry of Municipal Affairs and Housing since 1992.

Dave is also a co-author of the Tarion Construction Performance Guidelines. Dave currently works with builders to analyze internal processes, identifying opportunities for quality improvements and customer service excellence.

Note: This is part of the new HCRA Education Criteria as of February 1, 2021 for new applicants proposing to build residential freehold and low-rise condominium under Part 9 of the Ontario Building Code. For more information on what competencies you need to meet, please visit “HCRA's Getting Registered Page“.

This is a technical workshop intended for persons wishing to become a HCRA registered homebuilder. buildABILITY reserves the right to limit registration to individuals with the necessary demonstrated prerequisite knowledge and expertise.

Our refund policy can be found on our FAQ page. 

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