Air leakage and moisture deposition of prefabricated light-frame wood building
Asiz, A., Smith, I. and Menendez, V.
2008 Proceeding of the 10th World Conference on Timber Engineering, June 2-5, Miyazaki, Japan.
Asiz, A., Smith, I. and Menendez, V., (2008), "Air leakage and moisture deposition of prefabricated light-frame wood building", Proceeding of the 10th World Conference on Timber Engineering, June 2-5, Miyazaki, Japan.
Abstract:
Air leakage and moisture deposition are key factors in energy and durability performance of buildings, and in creation of healthy indoor climates regardless of the form of construction systems. However, as experience has shown buildings constructed using prefabricated (prefab) system are sensitive to air leakage and moisture movement particularly in their construction joints. The main purpose of this paper is to discuss the performance of a prefab light-frame wood building through long-term field monitoring. Key hygrothermal parameters including temperature, relative humidity and differential pressures across wall layers were recorded using sensors connected to a computer data acquisition system. Data collected is unique in that it articulates the behaviour of construction joints in walls, and not just wall panels as in other studies. Results showed that air movement occurred mostly in the construction joints relative to the clear (joint free) wall sections. Although this air leakage helped dry materials around the construction joints the heat (energy) loss was quite high.
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