Outdoor benches - aluminum or as a roll layer of facing stones

And? Do you have the window open when it rains? With triple glazing, you don't hear anything inside. IMHO

But of course. I lived for years in such a house as a tenant. Triple glazed, windows closed. Sometimes it was impossible to sleep. I have to add, no roof overhang.

Sorry for the late response.

So we have now decided on window sills made of rolling layer of clinker bricks. Neither of us liked the aluminum window sills.

here are the pictures

The labels in the view are a bit wrong, where it says garden view is actually the back of the house, 3 meters distance to the next property, street side corresponds to the garden side, 12 meters to the street

It's definitely the right decision. Granite might not have suited this lively stone either.

Can you tell me how your complete wall construction is, and whether you have an air gap in front of the insulation?

17.5cm KS + 17cm glass wool + 12.5cm facing I do not mean an air layer in front of the insulation, but I am not 100% sure right now, I will check it this evening and then let you know

So we have now decided on window sills made of roll layer of clinker bricks. We both didn’t like aluminum window sills that much. here are the pictures

Oh, that’s nice that you’re still answering the follow-up questions here, where the answer to your question has already been found.

1cm of air between insulation and cladding