Ilmatiheys
Ilmatiheys is a Finnish term that translates to "airtightness" or "air leakage" in English. It refers to the degree to which a building or building component resists the uncontrolled passage of air. This is a critical aspect of building performance and energy efficiency.
In construction, ilmatiheys is achieved through careful design and execution of air barriers, which are continuous
Measuring ilmatiheys is typically done through a blower door test. This test depressurizes or pressurizes the