What is the effect (extent) of the aging process in the airtightness performance?

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There is little information on the subject at the moment. A study referenced in a paper written by Erhorn et al. and presented at the 2008 AIVC conference shows airtightness values of 31 “Passivhaus” houses at commissioning and 2 years later. The average n50 at commissioning and 2 years later were 0.37 and 0.46 ach at 50 Pa, respectively.

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