ᐅ Impact of Flush-Mounted Boxes in the Party Wall on Sound Insulation

Created on: 17 Dec 2016 15:18
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BigFlow
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BigFlow
17 Dec 2016 15:18
Hello,
In the future living room of our house, I had two rows of five flush-mounted boxes installed on the walls for power, LAN, and TV outlets. The boxes are arranged in two rows one above the other, about 30cm (12 inches) above the floor, located in the middle of the room.

These walls are the separating walls to the neighbor (mid-terrace house). The walls consist of two layers of 17.5cm (7 inches) Poroton soundproof bricks with 4cm (1.5 inches) of mineral wool in between.

Our inspector mentioned yesterday that he doesn’t like such an arrangement because the sound insulation can suffer, especially if the neighbor has the same idea. Unfortunately, nobody pointed this out during the electrical planning, and I would never have thought of it myself.

Can this really lead to noticeable losses in sound insulation?
Mycraft17 Dec 2016 16:04
So he is not entirely wrong, but the issue is more numerical than something you would consciously notice...

In other words, it can be demonstrated based on the figures that the sound insulation is affected... but this does not necessarily mean that you or your neighbor will actually notice it, as it is more of a minor concern.