Sound proof wall being constructed. The make-up consists of a metal stud wall, packed tight with insulation. Then a layer of plasterboard with all seams completely sealed with an acoustical sealant. Ceiling, floor, adjoining walls and any intermediate joints, all need acoustical sealant the full width of the joint.
The finish on the wall in the photo, is wall panelling made from mdf sheeting with a panelled effect. The mdf sheeting makes up the second layer of the sound proof wall. This wall is fixed with an acoustical glue, which dampens the transfer of vibration, which in turn, dampens sound. This second layer could also be a second layer of plasterboard. All acoustical sealing applies once more on this second layer.
A sound proof wall starts with a framed metal stud wall, packed with insulation. This is built 10mm away from the existing wall, making sure the new wall is not in contact with the existing wall, whilst also creating an air chamber.
This is the first layer of two. The plasterboard is fixed to the metal stud partition wall and completely sealed the full width of the plasterboard. Between every joint. Ceiling, adjoining walls and all intermediate joints in the plasterboard.
Mdf panelled sheeting was used as the second layer of this sound proof wall. A second layer of plasterboard could also have been used, and finished in skim coat plaster. Mdf has good dampening qualities. When this layer is glued up with acoustical glue, and then sealed completely, like the first layer. The reduction of noise should be reduced by at least 50%.
This wall has also been sound dampened, using calibel acoustical plasterboard. This is a great product for reducing the transmission of sound, also the most cost effective. The wall still requires the second layer stepping all joints, and once again both layers completely sealed, with acoustical sealant.