Your experiences with soundproof drywall panels?

These are standard drywall panels in our case. As mentioned, the better sound insulation results from the construction (number of panel layers, type of profiles, intermediate insulation...).

For me, it was the Duo'Tech boards from Rigips. The advantage of these is that they are already double, and the adhesive between the boards additionally absorbs a lot of sound. On the [Rigips Austria] homepage, you can also find a short video where you can see or hear the difference it makes. I wouldn't have believed that an adhesive alone can make such a difference. The boards are naturally heavier, as they are essentially two, but to make them easier to install, they are also slightly smaller than conventional gypsum boards. You also save time, of course, since you only have to do the wall once instead of twice. That means you save time during installation and also get a better result.

Is buying it really worth it, is it more noticeable than just doubling the drywall?

On the Knauf homepage, there are excellent documentations and planning recommendations which, in my opinion, are THE reference in the industry. The insulation in between is actually not the decisive factor; it is usually more than sufficiently dimensioned. The difference is made at the connection of the drywall panels to the stud frame, because this is where structure-borne sound transmission between rooms occurs. I am a fan of staggered stud frames (double stud frames) or spring rails on wooden stud frames. With this, you already achieve the sound insulation values of a triple-layered W113 with just a simple lining. You just have to see with which wall thickness you can still manage. However: even the best wall construction is useless if the detailed solutions (connections to adjoining components, doors, electrical outlets and switch boxes, niches, etc.) are poorly planned or improperly executed. The devil is in the detail!

Yes, I have already worked with it, I also used drywall with sound insulation in our holiday home in Austria. The advantage is that you save a lot of time, especially the filling of the first layer is omitted. The two layers of the board are also bonded with a special adhesive that additionally insulates sound. Especially since there is not much difference in price, I would say it is worth it. You must not forget that already 10 dB corresponds to a halving of the volume, so I would definitely pay attention to every dB that can be saved.

Since when is 10 dB 50%???

Since when is 10 dB 50%???

Since around 1936. In 1970, it was then determined that a psychoacoustically perceived doubling or halving of "loudness" corresponds to a level change between 6 and 10 dB, depending on the noise characteristics.

Since around 1936. In 1970, it was then determined that a psychoacoustically perceived doubling or halving of "loudness" corresponds to a level change between 6 and 10 dB, depending on the noise characteristics.

Depending on the frequency, a sound may be perceived as more or less disturbing, meaning that at the same sound pressure, for example, 2 kHz is more disturbing than 200 Hz. However, this is purely subjective; mathematically and objectively, a 6 dB change in voltage or sound pressure corresponds to a doubling, while in terms of power it is 3 dB.