noun
Refers to thermal, electrical, or sound insulation. Used in technical and everyday contexts.
この家はインシュレーションがしっかりしているので、冬でも暖かい。
This house has good insulation, so it stays warm even in winter.
断熱材 specifically refers to thermal insulation material, while インシュレーション is a broader loanword covering thermal, electrical, and sound insulation.
Borrowed from English 'insulation'.