airtightnessare
Airtightnessare is a term used in building physics to describe an area-normalized measure of airtightness, intended to compare how tightly different defined areas—such as a building envelope, a room, or a component assembly—limit air leakage. It is a neologism and not part of formal standards, but it appears in technical discussions and some research papers as a way to combine leakage rate with the size of the area.
Definition and calculation: Under a standardized pressurization test, the leakage rate Q is measured at a given
Applications and considerations: The metric is used to compare the relative airtightness of different assemblies or
Relation to standard metrics: Airtightnessare complements standardized measures such as ACH50 or n50, which refer to