Abstract
Recently, in order to attempt the maintenance of the beauty of buildings, the exterior materials which are effective in self cleaning have paid attention. However, it is not clear the effects of various materials, and application in the cold region. The purpose of this study was to clarify the effects of various finishing coating materials which are effective in self cleaning. The results show that finishing coating materials with small water contact angle are effective in rain water-cleaning, and stain like flowing rain water do not adhere easily to finish coating materials with large water contact angle, etc.
