building envelope

(architecture) The physical separator between the conditioned and unconditioned environment of a building.

Japanese Meaning

建物内の快適な環境と外部の無条件環境を分ける、建物の外部構造要素（壁、屋根、窓など）

To reduce energy consumption, the architects upgraded the building envelope with improved insulation and airtight seals.

エネルギー消費を削減するために、建築家たちは断熱材と気密シールを改善して建物の外皮を強化した。

Sense（1）

(architecture) The physical separator between the conditioned and unconditioned environment of a building.

building envelopes

（ plural ）