Partially insulating a cold roof - is that a good idea?

I thought so. I would have dared to insulate it completely, I don't understand the construction company's resistance to it: "only if it is heated." Unfortunately, I am dependent on this, at least as long as the warranty is still valid. Otherwise, I lose it.

However, I would already question the actual condition with droplet formation and settled mold and thus simultaneously the warranty ;) It might be worthwhile to bring in a knowledgeable person now and have the situation assessed on site .....

We have addressed that. The status was described here: The bricks were "insulated" with construction foam. Another place where the mineral wool gets wet is around the chimney. Nothing was done there.

1. Links are not allowed here, so please remove it before the thread/post is deleted.

2. you should actually consult an expert and, if applicable, assert your warranty claim.

Edit: oh, I just noticed that it is an internal link ;)

Take a look at the thread from which this quote from one of my posts originates:

Karsten has commented in several similar threads; referring to his own project, the answer is probably best found here: - but I believe it was less about a "warm" storage room and primarily about a "less temperature-fluctuating" storage room.

Overall, it’s about the suitability/preparation of an attic as a storage space, and specifically in the linked thread by , it’s also about the fact that you can basically put a climate container in your attic.