Sound goes wherever air can go: under doors, through window joints, air vents, roller blind boxes and through the wall itself if not properly sealed.
Good acoustic insulation implies good air-tightness.
Seal carefully to ensure a perfect seal! Place the vapour barrier making sure to correctly cover and joint the strips.
Use resilient strips around the edges or else seal with putty.
In order to protect against noise from outside the dwelling, it is essential to provide good insulation against airborne sound.
Favour the use of double walls including absorbent material and inner walls with high surface density (brick,gypsum, Fermacell).
The uprights of a wooden framework, runners, cable troughs or water ducts are some of the acoustical bridges that can facilitate the propagation of sound
Remember to detach the wall from its finish facing.
It is also advisable to avoid positioning the connection points opposite one other (min. 20 cm).
Mainly used in offices, restaurants and cinemas, it reduces the sound level by trapping the noise and preventing phenomena of sound reverberation.
Use absorbent surfaces such as curtains, carpets or an acoustic plenum made up of an absorbent insulation product placed behind a facing drilled on the inner side (in the wall or ceiling).
Characterised by :
Expressed in dB, this describes the insulation of a wall :
Unit of measurement that expresses the level of noise. It is expressed on a non-linear scale which has the peculiarity that the sound level is multiplied by two every 3 dB (e.g.: 60 dB 60 dB = 63 dB).
|100 dB||Car horn|
|70 dB||Road traffic|
|50 dB||Country side|