Abstract
To use the wood used for a traditional building effectively, abstergent of dirt was investigated. As for the washing method, painting, the blast, and the water jet, etc. are enumerated. In this report, the examination was executed by using painting and the blast to investigate the washing method of maintaining the ruggedness on the surface. The examination was evaluated by a change and a color difference, etc. the ruggedness on the surface.As a result, it was able to be confirmed that the blast within a certain range of the condition was effective to maintain the ruggedness on the surface, and to wash it.
