Abstract
I measured the temperature and relative humidity of the neighborhood of floor bottom and dirt floor of the traditional wooden house without the resident in Nara. As a result, both the temperature and the relative humidity of there became higher in the rainy season, in the summer, in the first fall, and understood that it was easy to be with the environment where damp mold was easy to grow. It is thought that moisture from the floor lower soil and a dirt floor influences it.
When outside temperature decreases after a fall, it becomes less than a water condensation near a dirt floor, it was understood that water condensation was more likely to become easy to be generated on the border with the outdoors. In addition, it was revealed that it was unlikely to be the growth of the damp mold because temperature decreased during this period.
Therefore, in time from the rainy season with many typhoons from the beginning of September to the middle, it can say that it is particularly important to fix the environment of the material neighborhood in controlling biodeterioration of the wood.
