How to say "insulation" in Japanese

• 断熱だんねつCommon
  suru verb, intransitive verb, no-adjectiveInsulation against heat: keeping warmth in or out, as in the walls of a house. When 'insulation' is about temperature rather than electricity, this is the word.
  断熱性だんねつせいが優すぐれていることの欠点けってんは、すぐに過熱かねつ状態じょうたいになってしまうということである。↗

  The disadvantage of excellent insulation is that it quickly leads to overheating.
• 絶縁ぜつえんCommon
  noun, suru verb, transitive verb, intransitive verbElectrical insulation: preventing current from passing, as in cables and appliances. Thermal insulation is also covered, but for heat use 断熱. It can also mean isolation in the sense of cutting off a relationship.
  軟なん木もくの絶縁ぜつえんされた部屋へやおよびよいヒーターはサウナのための絶対ぜったい必要ひつようである。↗

  An insulated soft-wood room and a good heater are the absolute necessities for a sauna.

Choose 断熱 for insulation against heat or cold, as in buildings, and 絶縁 for electrical insulation; 絶縁 can also mean isolation in the sense of cutting off a relationship.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 断熱だんねつinsulation
• インシュレーションinsulation
• 中綿なかわたpadding (clothing or bedding)
• 断熱性だんねつせいheat-insulating properties
• 絶縁ぜつえんinsulation (electrical or thermal)