Predicting Influence of Changes in Indoor Air Temperature and Humidity of Wooden Cultural Heritages by Door Opening on Their Conservation Environment

개방에 따른 실내 온습도 변화가 목조문화재 보존환경에 미치는 영향 예측

  • Received : 2015.06.22
  • Accepted : 2015.11.02
  • Published : 2015.11.25


This study was conducted to predict the effect of door opening in wooden cultural heritages (WCHs) on their conservation environment. For this prediction, measured relative humidity (RH) and surface wood moisture content (MC) of inner part of wood columns in open wooden building and neighboring closed wooden building were compared with minimum RH, including the duration of minimum RH, and MC required for spore germination and resultant growth of wood-degrading fungi reported in some literatures. Moisture conditions, namely RH of inside wooden building and MC of wood was unsuitable for decay and sap-stain fungi all the year round; however, moisture conditions during summer season was suitable for spore germination and resultant growth of surface mold fungi, regardless of door opening. When compared, the duration of minimum (75%) or higher RH and the number of wood columns with MC level greater than the minimum MC (15%) during summer season, the surface mold related to the conservation environment of inside wooden building was somewhat better in open building than in closed building. Rather, doors should be opened in closed building for reducing indoor RH as a necessary measure during summer season when outdoor RH is high.


wooden cultural heritage;conservation;fungal deterioration;door opening;relative humidity;surface moisture content


  1. Kim, M.-J., Shin, H.-K., Choi, Y.-S., Kim, G.-C., Kim, G.-H. 2015. An aeromycological study of various wooden cultural heritages in Korea. Journal of Cultural Heritage (in press).
  2. Morris, P.I. 1998. Understanding biodeterioration of wood in structures. Forintek and British Columbia Building Envelope Council, Canada.
  3. Viitanen, H. 1996. Factors affecting the development of mold and brown rot decay in wooden material and wooden structures: effect of humidity, temperature and exposure time. PhD thesis. The Swedish University of Agricultural Sciences, Sweden.
  4. Viitanen, H. 1997. Critical time of different humidity and temperature conditions for the development of brown rot decay in pine and spruce. Holzforschung 51(2): 99-106.
  5. Viitanen, H., Bjurman, J. 1995. Mould growth on wood under fluctuating humidity conditions. Material und Organismen 29(1): 27-46.
  6. Viitanen, H., Salonvaara, M. 2001. Failure criteria. In: Moisture analysis and condensation control in building envelopes, ASTM Manual Series MNL 40, Ed. by Trechsel, H.R. ASTM, USA.
  7. Viitanen, H., Vinha, J., Salminen, K., Ojanen, T., Peuhkuri, R., Paajanen, L., Lahdesmaki, K. 2010. Moisture and bio-deterioration risk of building materials and structures. Journal of Building Physics 33(3): 201-224.


Supported by : 국립문화재연구소