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Study on Moisture Variation in Light Frame Wall with Different Wall Assemblies (I) - Evaluation of Improvement with Laboratory Test -  

Kim, Se-Jong (Dept. of Forest Sciences, College of Agriculture & Life Science, Seoul National University)
Lee, Jun-Jae (Dept. of Forest Sciences, College of Agriculture & Life Science, Seoul National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.37, no.4, 2009 , pp. 320-329 More about this Journal
Abstract
The purpose of this study was reducing the moisture accumulation in a wall, which can threaten the structural safety of light-frame wall and make residential environment poor. For the purpose, the laboratory test was carried out with different wall assemblies. Vapor retarder and air gap for ventilation were added to the typical wall. The improved performance of the proposed walls was examined through the test with distinct difference of temperature and relative humidity between outdoor and indoor air conditions. Increased dampproofing performance of additional vapor retarder was effective on reduction of moisture transmission from inside the house into the wall. However, unexpected high relative humidity was shown in the wall with two additional vapor retarder because of excessive dampproofing performance or inadequate location of vapor retarder. And, the open air gap induced the moisture transfer from inside the wall into outdoor air by ventilation. If the alternative to the induction of moisture transmission from inside the house into the wall with open air gap can be found, moisture reduction effect of that will be increased obviously.
Keywords
light-frame wall; moisture transfer; moisture accumulation; condensation; drying potential;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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