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この建物の外壁はレンガでできている。
The exterior wall of this building is made of bricks.
The outer wall of a building or structure, typically made of materials like brick, concrete, or siding.
外壁の塗装が剥がれている。
The paint on the exterior wall is peeling.
Often used in construction, architecture, and real estate contexts.
In construction documents, 外壁 is often specified by material (e.g., 'コンクリート外壁' for concrete exterior walls).
Composed of 外 (gai, meaning 'outer') and 壁 (heki, meaning 'wall').
In technical contexts, it may refer to the structural or decorative outer layer of a building.