1999 Volume 64 Issue 519 Pages 39-45
The aim of this paper focuses on explicating phenomena of concealed condensation in wood frame construction walls caused by the undesirable temperature rise due to sun burn. Two types of laboratory experiments were carried out to explicate these phenomena. One was a humidity response test for small specimens of porous material, the other was a wood frame wall model test in which specimens of wall were sandwiched between two test chambers, one representing a room and the other representing the outdoor environment simulated to standardized meteorological data for Tokyo. We conclude that concealed condensation was caused by desorption of moisture which porous materials contain and a vented wall can reduce these condensation. But this paper suggest that more study should be done on the prevention of concealed condensation too.
