École Heritage Immersion – Construction Airtightness Testing
In 2014/15 the École Heritage Immersion School in St Pierre-Jolys, Manitoba, underwent a major building envelope upgrade including complete removal and replacement of the west and north exterior walls plus the courtyard area.
Services Provided
- As part of this work, BETAC conducted a pre-retrofit test on the building in 2013 to quantify its air leakage characteristics and to identify significant air leakage sources on the building envelope.
- Following the retrofit, a second test was performed in 2016, allowing the impact of the test to be assessed.
Results
- The retrofit was able to reduce the measured air leakage of the building by over one-third, depending on the metric.
- The Equivalent Leakage Area (ELA10) was reduced by 34%, or 0.39 m2(4.2 ft2).
The Public Schools Finance Board has expressed interest in collaborating with BETAC to further these research activities as they apply to schools around the province.

The Bluebird Lodge is currently undergoing a major building envelope upgrade, which got underway in late 2016. The upgrade is focused primarily on the exterior wall system.
Test results will be used to further expand BETAC’s growing database on airtightness characteristics of large commercial-style buildings which began in 2013 with the testing of 26 buildings in Manitoba.







