ᐅ Your experiences with soundproof drywall panels?

These are standard drywall panels in our case. As mentioned, the improved sound insulation results from the construction (number of panel layers, type of studs, insulation in between, etc.).

For me, it was the Duo’Tech boards from Rigips. The advantage is that they are already double-layered, and the adhesive between the panels additionally absorbs a lot of sound. On Rigips Austria’s website, you can also find a short video showing both the visual and audible difference it makes. I wouldn’t have believed that the adhesive alone could have such an impact. The boards are naturally heavier since they are essentially two boards, but to make installation easier, they are slightly smaller than standard drywall panels. You also save time because you don’t have to build the wall twice—one installation is enough. This means you save time during installation and still achieve a better result.

Hirscherlo schrieb:
Is buying that really worth it? Is the difference more noticeable than just doubling the drywall?

The Knauf website offers excellent documentation and design recommendations, which in my opinion are the industry standard reference.
The insulation between studs is not really the decisive factor; it is usually more than adequately dimensioned. The key difference lies in the connection of the drywall panels to the stud frame, as this is where impact sound transmission between rooms occurs. I am a fan of staggered studs (double stud walls) or resilient channels on wood studs. With these, you can achieve the sound insulation values of triple-layer drywall W113 with just a single layer of drywall. You just have to check which wall thickness you can accommodate.
However, even the best wall construction is ineffective if the detailed solutions (connections to adjacent components, doors, electrical outlets and switches, niches, etc.) are poorly designed or improperly executed. The devil is in the details!

Pakon schrieb:
Yes, I have already worked with it. At our holiday home in Austria, I also used drywall with sound insulation.
The advantage is that it saves a lot of time, especially since the first layer of joint compound is no longer necessary.
The two layers of the board are bonded with a special adhesive that additionally reduces sound transmission.
Since the price difference is not that big, I would say it is worth it.
You should not forget that a reduction of 10 dB corresponds to cutting the perceived loudness in half, so I pay close attention to every decibel that can be saved.

Since when is 10 dB equal to 50%???

Peanuts74 schrieb:
Since when is 10 dB 50%???

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

MayrCh schrieb:
Since around 1936. In 1970, it was established 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; for example, at the same sound pressure level, 2 kHz might be more bothersome 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, a 3 dB change represents a doubling.