Buying guide for windows in new construction

You contradict yourself on all points. Soundproofing is important. There are windows with special soundproof glass. But you are building with "light" bricks. Therefore, you should change the windows and use sand-lime bricks with ETICS or a clinker facade. The windows are also rather not burglary-resistant. There are categories for that. Google them and order accordingly. You don't have to worry about condensation. Rather about shading in summer.

Why contradict? Regarding the brick, our construction company told us that external noise is not the problem, but with bricks mainly the sound transmission inside the house is higher and therefore can be a problem, for example, in a multi-family house. Regarding burglary resistance, do you mean for example RC2 and RC3? As far as I understood, the concealed fittings comply with the RC2N standard. But I am happy to be corrected on that. What exactly do you mean by shading? The brightness itself that falls into the rooms in summer?

Is this still about this house? https://www.hausbau-forum.de/threads/langes-schmales-Grundstück-170-190-qm.30954/page-3#post-332187 The number of chambers is a specious argument. I had already looked at the profile and found no fault with it. With the MD variant you’re doing well.

Correct, that is the house. I have already noticed the chamber thing; unfortunately, it's not really easy for a layperson to see what is just marketing. Sorry, but what exactly do you mean by "MD"? Thank you very much for your answers

what exactly do you mean by "MD"?

You wrote

- System equipped with 3 seals

I read that as the presence of a middle seal.

Yes, I would also say that as a construction company to win you over as a customer. can say something about that. But he lives quietly and he doesn’t care. The fact is: mass absorbs sound. Well insulating stones have lots of air and little mass. Most builders don’t mind that. But you are obviously sensitive to that. The windows won’t make much difference there. Yes, I mean the standards. But that includes the entire window including installation and not just "one part complies." You also care about that, so make sure you get the whole standard and not just one part of the window. Possibly also deal with an alarm system early on.

Fact is: mass eats sound.

It can't do that at all, because: how should it absorb it?

Sound is known to propagate in waves. This means that in the case of airborne sound, the air is set into vibration. When these vibrations encounter a solid body, the sound waves must cause the air inside the house to vibrate by passing through the body. This becomes more difficult the higher the mass of the body is. Impact sound behaves differently, for example. Here, the [GU] of the [TE] is correct. However, this does not apply to the sound of cars in front of the house.

I will bring up the topic again during the window planning. Our general contractor did not advise against it because it is cheaper; the money would not have played a role there, and he knew that. However, what he already knew at that time but I did not mention in my first post is that a high wall is planned along the street. Maybe he had already taken that into account, I don’t know. I will clarify everything at the appointment. In any case, thank you very much for the answers, I somehow had concerns about condensation on the window or something similar.