Soundproofing - weakest link? (Windows?)

49 dB the glazing. Depending on the size of the element, i.e. the ratio of frame to pane, the value of the entire element decreases by another 1-2 dB. It’s all useless if you don’t also upgrade the roller shutter box accordingly with sound insulation. Each window has become on average 230 EUR more expensive because of this. Considering 30+ years, I don’t find it unaffordable.

You have contractually fixed windows of sound insulation class V?! That for an average of 230 euros more?! That would be more than a bargain.

Hello,

is it actually irrelevant what material the house is made of regarding sound insulation? Because usually the standard window with under 40 dB is almost always weaker than the wall itself.

Does a good dB value even help me with a certain wall construction?

No, it is not irrelevant. In addition, it also depends on the sources of the noise. For good sound insulation, you cannot simply add together building components. It should already be properly *planned* as a concept. Obviously, you are far from that.

You have contractually fixed windows of sound insulation class V?! That on average for 230 euros more?! That would be more than a bargain.

The sound insulation class is not contractually fixed, but the glazing has a sound insulation value of 49 dB and is constructed as follows: laminated safety glass 12mm-8mm-laminated safety glass 10mm (instead of "standard" 4mm-4mm-4mm). Additionally, there is heavy foil in the roller shutter box, also with a sound insulation value of 49 dB. And you can’t really get much more than an 88 mm profile.

What is the use of a 49 dB glass in, say, a 44 dB frame surrounded by a 41 dB Ytong? Noise level range V is not without reason. What does the sound insulation certificate say about the Ytong?

What I want to say with this is – we humans quickly get used to ambient noises; you too surely to regularly passing trains ;)

Tell that to the residents of the Middle Rhine Valley. With such statements you will surely make many friends there who would gladly let you "try sleeping" a night or two. Furthermore, highway noise has a completely different characteristic than rail noise.

Not everything that is labeled noise is noise! You also don’t wake up because of a _distant_ train that runs every night.

See above. The "it's just a little noise" faction is advised to read the NORAH study.

What use is a 49 dB glass in, say, a 44 dB frame surrounded by a 41 dB Ytong?

First of all, more than 36 dB glass in the same frame.

In addition, the pure masonry is supplemented by interior plaster, ETICS, and exterior plaster. ETICS made of polystyrene, for example, reduces the overall sound insulation value of the masonry by 2 dB, as it transmits vibrations to the masonry due to its stiffness; rock wool, on the other hand, provides an additional 6 dB due to its properties. That is why we choose rock wool. We prefer mineral plaster because it has more mass and thus absorbs more than silicone resin plaster.

The overall system of interior plaster–Ytong–ETICS–exterior plaster achieves a sound insulation value of 47 dB for us and is therefore more or less as good as the overall system of window profile–glazing–roller shutter box.

We have dealt with this intensively. It is very difficult to find competent contacts on this topic. Ultimately, we rely on an 18-page calculation we had made on the subject of sound insulation for our house. I am confident that the result will also meet our expectations.

Tell that to the residents of the Middle Rhine Valley. With such statements, you will certainly make many friends there, who would gladly let you "try sleeping" a night or two. Furthermore, highway noise has a completely different character than railway noise.

In advance - the language of the forum is the informal "Du" ;)

I don't need to "try sleeping" anywhere, I know noise of all kinds; I described a little earlier.

I rarely understand these discussions, because every person has the choice, right? But what annoys me most and honestly: everyone wants to live right in the middle, with the best connections to train, bus, and highway, but the noise should please just disappear. That doesn't work, not even in the 21st century. That won't be solved by the increase of e-cars either, because then other problems will come to us. Currently: you simply don't hear these vehicles.

I happen to know the study, it primarily deals with aircraft noise. That's something completely different and the residents near Düsseldorf Airport know that very well. Years ago, the current residents bought building land very, very cheaply in the immediate vicinity – with full knowledge of all environmental conditions – only to complain cheerfully years later. I don't have to understand that either ....

Rhineland greetings