Ventilation measurements in housing.

Measurements have been made of infiltration rates and air leakage characteristics of the building envelope in 38 dwellings all built within the last 20 years and covering a range of construction types. Conventional tracer gas techniques were used (employing nitrous oxide as the tracer) to determine air infiltration rates. Overall leakage characteristics were measured under pressurization using a fan. Some correlation was found between the overall leakage characteristic and the actual infiltration performance of a dwelling.