What a saobuchi-tenjō is
A saobuchi-tenjō is a ceiling of boards laid over thin battens running in parallel. Where a Gō-tenjō builds a grid in two directions, this one works with lines in a single direction.
It is the commonest ceiling in houses. The west reception wing of the Ishikawa brewery in Mie Prefecture, built in 1898, is described as four rooms in a square arrangement all finished this way, with the main room and its anteroom to the south looking onto the front garden across an unsheltered veranda, in what the entry calls a fine building for receiving guests.
Kitchens and boarded rooms use it too. The kitchen of the Hiraoka Residence in Tokushima Prefecture, from the early Showa period, is boarded and ceilinged this way to the south, while the north half was formerly a Doma with a well pump.
Western-style buildings borrowed it as a Japanese motif. The former hall of the Utsunomiya agricultural school in Tochigi Prefecture, built in 1903, is described as plain but carefully built, showing Japanese-influenced detail throughout in its coved cornice and ceilings of this type.
Ranked against the coffered ceiling
A single building may vary its ceilings to rank its rooms. The great reception room at the Suenaga Residence in Ehime Prefecture, built in 1927, has a main room and an anteroom of eighteen mats each, the anteroom ceilinged this way and the main room with a coved coffered ceiling. Two rooms of identical size are ranked entirely by what is overhead.
A Chashitsu varies the material instead. The Shuseian tea room in Niigata Prefecture, from the late Taisho period, has bamboo battens over the guest seat and a matted ceiling over the host's seat, with a red pine lintel and an oak central post. Where you sit determines what is above you. An Ajiro-tenjō may be combined in the same way.
Two Japanese spellings are in use and both appear in the records, so the spelling of the entry being quoted is the one to follow.
On site, look up and read the direction of the lines. Thin members at even intervals running one way with boards between them is this ceiling.
References
- Agency for Cultural Affairs: Registered tangible cultural properties (structures)
- https://www.bunka.go.jp/seisaku/bunkazai/shokai/yukei_kenzobutsu/toroku_yukei.html
- National Cultural Properties Database: Ishikawa brewery west reception wing, four rooms all under batten ceilings
- https://kunishitei.bunka.go.jp/bsys/maindetails/101/00009480
- National Cultural Properties Database: Hiraoka Residence kitchen, boarded and battened to the south, formerly earth-floored to the north
- https://kunishitei.bunka.go.jp/bsys/maindetails/101/00014295
- National Cultural Properties Database: former Utsunomiya agricultural school hall, weatherboarded outside
- https://kunishitei.bunka.go.jp/bsys/maindetails/101/00003056
- National Cultural Properties Database: Suenaga Residence great reception room, batten ceiling in the anteroom and a raised coffered ceiling in the main room
- https://kunishitei.bunka.go.jp/bsys/maindetails/101/00003161
- National Cultural Properties Database: Shuseian tea room, bamboo battens over the guest seat and matting over the host's
- https://kunishitei.bunka.go.jp/bsys/maindetails/101/00014344
Last verified: 2026.09.03