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Anonymous /diy/2921972#2923982
6/14/2025, 3:06:21 AM
>>2923968
>15cm is the minimum/standard total insulation of a new house. no reason for anyone to add that to an existing house ever.
Maybe heating is free in Norway, but in most countries with cold winters it's a significant monthly expense. Instead of paying for decades of heating bills, which get higher and higher every year, you invest the money one-time into insulation.

Of course, if you change houses every few years, future residents benefit at your expense, which is why in America few people bother to properly insulate their houses. In central/eastern Europe people actually own their houses, and they live there for generations, so it makes sense to insulate them properly.