高こう気き密みつ

noun, noun which may take the genitive case particle 'no'

high airtightness; good airtightness

Technical term used in construction, architecture, and building performance to describe a structure with very low air leakage. Often appears in compound phrases like 高気密住宅.

See also: 気密

• この家いえは高こう気き密みつなので、冬ふゆでも暖あたたかい。

  This house has high airtightness, so it stays warm even in winter.

• 高こう気き密みつ住じゅう宅たくは省しょうエネに効こう果か的てきだ。

  Highly airtight houses are effective for energy saving.