To some extent yes. A collection and analysis of some data collected through the ASIEPI partners has been presented at the 2008 BlowerDoor conference (Papaglastra et al., 2008). However, caution should be exercised when comparing airtightness values :
- the measurement methods are not necessarily the same. EN 13829 mentions two methods (A and B) that can lead to very different results e.g., depending on how combustion appliances are sealed; (*)
- the calculation of the volume or the envelope area that is used to normalise the leakage flow may be different for the same building, depending on the assumptions adopted nationally or even by the operator.
It would be useful to harmonise these methods to be able to reliably compare and monitor results.

(*) In Belgium, additional specifications for the measurement of envelope airtightness have been published (http://www.epbd.be/go/airtightness-measurement)

Anwered by: Rémi Carrié and Gaëlle Guyot (CETE de Lyon)
Date: 2008/12/12