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伝統構法による丸太の梁組 調布の家
Chōfu House: A traditional Japanese house with a joined wooden frame and tsuchikabe walls
日本家屋の茶の間とちゃぶ台 日本家屋の土塀 伝統構法の居室と丸太梁 日本家屋の茶の間とちゃぶ台 日本家屋の玄関内部
日本家屋の玄関外部から見る 木の家の手作り台所 日本家屋の木の階段 伝統構法の居室と大座卓 日本家屋の茶の間と座敷
日本家屋の床の間と押入 伝統構法の構造俯瞰図面 惺々舎 惺々舎の作業場に於ける伝統構法の丸太地組 伝統構法工事現場に於ける木組みと小舞掻き 竹小舞と荒壁塗り
Type: New house
Location: Chōfu-shi, Tokyo
Method: Traditional Japanese wooden construction
Tsuchikabe walls reinforced by bamboo laths
Total floor area: 96.4 m2
Completed: 2015
Design/construction: Seyseysha



This two-story house in Chōfu-shi, Tokyo, captures the heart of vintage Japanese residential architecture through traditional construction methods.
For the building materials, we used solid cedar, cypress, red pine, and chestnut, all from Japan.
For the through pillar, we used 12 cedar beams (18.08 cm x 18.08 cm each). The log beam supporting the 5.5-m x 7.3-m space on the second floor is red pine from Iwate Prefecture.
All the walls follow the age-old form: clay reinforced by bamboo laths. We used a middle-layer plaster finish (a mixed coating of clay, sand, and stray) for the interior walls and Tosa shikkui handa shiage (a mixture of clay, sand, straw, and Tosa plaster) for the outside walls.

Seyseysha never incorporates any synthetic building materials, so we used tsuchikabe walls (all at least 75 mm thick), 40-mm cedar for the sheathing (the sub-frame under the roofing), and 36-mm Japanese cypress for the floorboards. The thick, solid wood gives the house an insulative integrity, creating a space where the gentle warmth of natural materials keep the residents—a family of four—comfortable year-round.


(This house appeared in the December 2011 issue of Jūtaku Kenchiku and Issue 44 of Sumu.)