臺南市八協境市仔頭福隆宮神龕壁畫保存修護

The Historical Mural Shrine Conservation and Preservation Project - Fu-long Temple Mural Shrine, Shizitou, Baxiejing, Tainan

壁板彩繪保存修護研究對象為「臺南市八協境市仔頭福隆宮神龕壁畫」，為蔡草如晚期作品之一。因神龕壁畫目視下壁體表面已被線香與香燭所產生的有機揮發物燻黑至無法辨識，甚至與灰塵結合讓彩繪與壁畫產生不易清除之污垢；初步以科學儀器進行檢視，發現壁畫底稿保留完整，保護層破損及劣化甚少，故現階段以清除表面油煙層為主要目標。本文保存維護分三部份完成，首先透過科學影像紀錄檢視壁畫劣損狀況與位置並繪製破損圖；了解劣化原因及油煙附著成分後，再經由各項清潔技術測試評估壁畫對於不同清潔溶劑之敏感度及時間影響變化；最後執行壁畫保存維護作業。

This project, termed“the Historical Wallpainting Conservation and Preservation Project”focusses on the“Fu-Long Temple wallpainting”located at Shizitou, Baxiejing, Tainan. This wallpainting is recognized as one of the later works by Mr. Tsai, Tshau-Ju. Owing to the temple tradition of constantly burning incense and candles which emit a significant amount of organic volatiles and particles into the atmosphere which turn into tar and soot-like particles combined with airborne dust that have accumulated on the surface of the mural . After several decades, the surface of the wallpainting has become coated with layers of contaminants, so that now it is very difficult to identify the original painting. Therefore, removing the contaminant layers is crucial but a considerable challenge. During the preliminary examination and inspection, the paint of the wallpainting appears to remain intact with only minor surface deterioration. With this finding, the goal of the project is to remove the overburden of obscuring soot and tar. The proposed project was divided into three phases: First, using image-analysis to determine the extent of damage and to map the different degrees of damages over the entire painted surface. Secondly, using analytical equipment to identify the compositions of the contaminants and the possible causes of deterioration. After a full understanding the causes of deterioration and the composition of the obscuring layer had been determined, test cleaning and evaluation was performed. Knowing the sensitivity of the murals to different cleaning solutions then allowed conservation interventions and retouching to be performed.