Abstract
When the volume of water of flooring in the room of one year after it completed it was measured, it was understood that the volume of water changed greatly by the direction of the room and the environment such as sunshiny. Moreover, it has been understood that it is large and the volume of water is different in the room not assumed to be a room either where the window dawning ventilation was executed. It is easy for mold in flooring to receive a big influence to the volume of water. It has been understood that the volume of waters can be decreased more than the operation and maintenance of these ventilations etc. , and there is a possibility that the generation of mold etc. is held off.
