Airtightness testing of a CLT residential building according to ISO 9972 standard – leakage analysis
DOI:
https://doi.org/10.66987/EPKO.2026.13Keywords:
CLT structure, airtightness, blower door test, flow exponentAbstract
With the growing use of cross-laminated timber (CLT) technology, airtightness has become a key factor in energy efficiency and structural durability. This study applies a flow exponent-based analysis to investigate the relationship between airtightness performance and junction detailing. The results highlight the importance of understanding leakage mechanisms beyond the the conventinal n50 value. The paper also demonstrates the diagnostic role of blower door testing in CLT buildings.
References
[1] AIVC 11887 Sherman, M. H., Dickerhoff, D. J. (1998): Air-tightness of U.S. dwellings. https://www.aivc.org/ sites/default/files/airbase_11887.pdf
[2] Kalamees, T. (2007). Air tightness and air leakages of new lightweight single-family detached houses in Estonia. Building and Environment, 42(6), 2369–2377
[3] Straube, J. F., Burnett, E. F. P. (2005): Building Science for Building Enclosures. Building Science Press, Westford, MA. p. xxx.
[4] Carrié, F. R., Jobert, R., Leprince, V. (2012): Methods and Techniques for Airtight Buildings. AIVC Contributed Report 14. Air Infiltration and Ventilation Centre (AIVC).
[5] ISO 9972:2015: Thermal performance of buildings – Determination of air permeability of buildings – Fan pressurization method.
[6] Passive House Institute (2015): Criteria for Passive Houses, EnerPHit and PHI Low Energy Building. Elérhető: https://passivehouse.com (letöltés dátuma: 2026.05.10.)
[7] Sherman, M. H. (1992): A Power-Law Formulation of Laminar Flow in Short Pipes. Journal of Fluids Engineering, 114(4), pp. 601–605.
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