shadow1

Soundproofing Partition walls

Partition walls and floors can be insulated to allow for extra privacy between rooms (and at the same time for better fire safety). By sound class, we mean the sound insulation (dB) that can be expected between the spaces where the separating structure is used. The laboratory recorded measurements of the construction solutions below are at least 3 dB below the stated values.

Table

Examples of how different activities can be heard at different dB (sound insulation values) between the rooms.

Clearly audible

 

 

Audible

 

 

dB

Normal
Speech

Loud
Speech

Shouting

TV, Radio
Normal level

TV, Radio, High level

TV, Radio,
Extreme level

Example of Rooms

30

 

 

 

 

 

 

Office

35

 

 

 

 

 

 

Office

40

 

 

 

 

 

 

Schools

44

 

 

 

 

 

 

Schools

48

 

 

 

 

 

 

Schools

52*

 

 

 

 

 

 

Apartments

56

 

 

 

 

 

 

Apartments

60

 

 

 

 

 

 

Spec. rooms

60

 

 

 

 

 

 

Spec. rooms

* Recommended for rooms where privacy is required


 

Partition timber floor


By using a 20mm Mineral Wool board or Wood-fibre board (white) between 2 layers of OSB the sound through a timber floor can be reduced to half. The Mineral wool slab (white) is placed on the construction floor, and another layer of board is placed cross wise on top of it. The double layer of plasterboard combined with the de coupling effect of the metal profiles reduces the sound through the roof by a further 10 dB.

Soundproofing

  • Floor covering/Carpet
  • OSB/Plywood
  • 20mm of Dense Mineral wool board or Wood-fibre board
  • OSB/Plywood Construction layer
  • Joists with Dense Mineral wool between
  • Metal Top hat profiles
  • Double layer of Plasterboard ceiling