"Washing" and "aged coloring" in Japanese wooden architecture - Transformation of aesthetic sense as seen from surface treatment technologies -

Research Project

Project/Area Number	16H06911
Research Category	Grant-in-Aid for Research Activity Start-up
Allocation Type	Single-year Grants
Research Field	Architectural history/Design
Research Institution	Kyoto Institute of Technology
Principal Investigator	Rie Nakayama 京都工芸繊維大学, グローバルエクセレンス, 助教 (30770185)
Project Period (FY)	2016-08-26 – 2018-03-31
Project Status	Completed (Fiscal Year 2017)
Budget Amount *help	¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000) Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000) Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords	洗い / 古色塗り / 表層処理技術 / 木肌削り出し / 古材転用 / 経年 / 古び
Outline of Final Research Achievements	This research was aimed to clarify the history of “washing" and "wood scraping ", "aging" and "coloring", all of which are examples of surface treatment technology implemented in wooden architecture in Japan, thus three fundamental studies were carried out, namely, a survey of documents and materials, a fact-finding survey and a survey of remains. Through them, it has been revealed that the practice of "wood scraping" that emphasizes renewal in periodical rebuilding is carried out by reusing old wooden material used in Ise-jingu Shrine. It has been also shown that there is a possibility of implementing "washing" techniques for the purposes of purification for structures designated as national property under the jurisdiction of the Imperial Household Agency. Furthermore, the presence or absence of "coloring" has shown the possibility of a relationship between tree species and aging of wood parts with maintenance procedures.