Shitomido and Mairado had been the major external partitions except walls in the past times, but they could not prevent rain and wind if opened so that they were inconvenient doors.
室外との隔ては、従来壁面を除き蔀戸や舞良戸が主体であり、開放すると雨風を防ぐ事ができず、誠に不便な建具であった。