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Potential heat loss due to air leakage through an enclosure with moderate or poor airtightness has a significant and measurable impact on the required heating energy for a building. An enclosure that has good or exceptional airtightness can provide major energy savings.

Building codes require that building enclosures include continuous air barriers; the integrity of those air barriers can only be measured with an airtightness test. Airtightness testing is typically carried out using blower fans to pressurize and depressurize the building to measure the overall building airtightness.

This half-day workshop is the first in a series that will focus on airtightness testing of buildings. Of interest to builders, developers, designers, energy advisors, and building officials, it will cover:

• Quick review of Part 9 Requirements and practice
• Overview of Part 3 requirements
• Designing the building for airtightness testing
• Defining airtightness test phases and boundaries
• Mid-construction qualitative testing
• Timing and conditions for quantitative airtightness testing
• Preparing for phased airtightness testing
• Preparing for whole building airtightness testing
• Quantitative airtightness testing procedures
• Recommissioning after airtightness testing

This workshop was prepared in collaboration with industry stakeholders and consultants.