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The demands on tightness can be specified. Tathetsfordringarna kan preciseras

Railio J., 1982
air change rate | air leakage | air tightness
Bibliographic info: LVI vol.33 no.3 March 1982 p.25-27
Languages: Finnish

The air tightness of buildings is part of an investigation performed by the State Research Centre of Finland. Regulations are being developed in Finland for the maximum allowable leakage in buildings. These can be stated as 0.2 ach/hr for residences, 0.1 ach/hr for low apartment buildings, and 0.2 ach/hr for high rise buildings. Tightness can be measured using a suitable fan connected to a board in a window or door opening, or by thermography.


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