Outlines causes of air infiltration. Discusses the air leakage paths of openings and measures that can be taken to reduce air leakage. Concludes that air infiltration should never be relied upon for ventilation but efforts should be made to make the building envelope more airtight, and a mechanical ventilation system should be installed.
The need for improved airtightness in buildings.
![](https://www.aivc.org/sites/default/files/default_images/default_image_5.png)
Year:
1977
Bibliographic info:
National Research Council of Canada. Division of Building Research. note. no. 151