勾こう配ばい天てん井じょう

noun

sloping ceiling; slanted ceiling

Architectural term for a ceiling that is not horizontal but inclined, often found in attics, under roofs, or in modern design.

• この部屋へやは勾こう配ばい天てん井じょうになっていて、開かい放ほう感かんがある。

  This room has a sloping ceiling, which gives it a sense of openness.

• 勾こう配ばい天てん井じょうの断だん熱ねつ工こう事じを検けん討とうしている。

  We are considering insulation work for the sloping ceiling.