A Traditional House in Kyotango|Tetsuya Kimura Architects
《A Traditional House in Kyotango》
This project involved the renovation of a traditional house in Kyotango, built in 1882. With its beautifully maintained exterior and formal front garden, the residence presents a dignified appearance. Facing south, the entrance, Japanese-style rooms, and formal reception room are arranged in a row, with a second floor above that was once used for sericulture. In the entrance and Japanese-style rooms, magnificent timbers supporting the sericulture rooms are exposed at the ceiling, while the alcove-side wall of the reception room at the rear features shoin shoji screens with exquisite craftsmanship.
The main living areas—the living room, dining room, kitchen, and bedrooms—are arranged in a lean-to addition on the north side. The dining room and kitchen were created by adding flooring to areas that had originally been earthen-floored spaces, resulting in a difference in level of as much as 30 cm between these rooms and the other living areas. The renovation project began with the aim of improving the house, which was vulnerable to the cold of winter and raised concerns regarding seismic performance. The elderly mother and the retired couple did not wish to change the customs and practices of daily life that they had followed for many years. Accordingly, the project sought to achieve the benefits of renovation while largely retaining the existing circulation and layout.
The area that had originally been an earthen-floored space was crossed at low level by thick sashikamoi lintels and round-log beams running in both directions, making it impossible to install a floor flush with the tatami rooms. The dignified pair of connected formal rooms and Japanese-style room were left untouched and designated as the upper-level rooms, while the remaining spaces for everyday living were consolidated as a low-floor area constructed with moisture protection. The low beams and ceilings are treated positively in relation to the barrier-free floor, making use of the changes in spatial character and division between them and the existing high exposed ceilings. Newly added columns and incorporated fittings also contribute to the variety of spatial subdivisions.
The substantial difference in level from the existing Japanese-style rooms was addressed by introducing stepped flooring with sufficient width and depth, creating a more natural and spatial connection. Viscoelastic dampers were installed in the primary structural timbers to improve seismic performance without relying on additional walls. Although the room arrangement remains unchanged, reconsidering the way the rooms connect to one another has restored the generous continuity of space characteristic of a traditional Japanese house.
Building Overview
Building area: 174.03 m²
Total floor area: 169.13 m²
Structure: Two-story wooden construction
Design and supervision: Tetsuya Kimura Architects
Construction: Sakane Construction Co., Ltd.
Overall coordination: Architects Studio Japan
Photography: Nakamura Photo Studio — Daisuke Nakamura
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