Roof insulation hip roof new building KfW 40

Oh, it is air-permeable? I thought it heats up and the heat can no longer escape (be blown out)… That means my fear that the roof does not cool down adequately at night is unfounded, right?

I thought it heats up and eventually this heat naturally comes through below. But if it lets the heat out again at night, that sounds good. Thanks also for that! Also for the statement that the only improvement would be thicker insulation in the upper floor ceiling.

Can anyone say anything about the door upstairs? Isn’t that the bottleneck then?

I am very curious about your fresh answer.

Now it's your turn, your homework is in post #3. The possibilities of abstract explanation are limited.

Don’t do this to me, you know just as well as I do that my answers are not in #3, see answer #5.

Please don’t make it too easy for yourself and help me…