Abstract
Recently, It would be necessary that the relationship between the presavation of Development of Maintenance and Conservation Methods for historical Architecture using plaster wall materials and the utilization of these archetecture and related circumstances is balanced to conserve the build environment toward the near future. From the standpoint of these backgrounds, some kinds of plaster-based External finishings were started to develop these days. In this study, The Inorganic plaster External Panels were producing, and the usability, environmentality(thermal insulation, thermal conduction) and fundamental properties of them were evaluated in the experiment. In additions, the case of applying the external wall panel were conducted.