How to Soundproof a Stud Wall
How to soundproof a stud wall to reduce sounds generated in common domestic situations, conversation, TVs, music and computer games. Increase the sound insulation between rooms in your home by soundproofing the stud walls that separate one room from another, soundproofing stud walls will also reduce noise from toilets, showers and noisy boilers that are normally situated near bedrooms.
Typical stud walls are constructed of a timber or metal frame that has plasterboard attached to either side; some stud walls will be insulated with a low density thermal insulation quilt. This type of construction will offer very little resistance to the passage of sound, successfully soundproof stud walls using the following methods below, increasing the mass of the wall and create separation to stop sound passing between rooms through the walls.
Soundproof a Stud Wall by Removing Existing Plasterboard
For the best level of soundproofing for an existing stud wall you should remove the existing plasterboard from one side of the wall. This will leave the cavity between the studs exposed, infill between the studs with high density acoustic insulation slabs. The depth of the existing stud will determine which thickness to use; this will normally range between 50-100mm for most stud walls. Once the stud is filled with the insulation fix soundbreaker bars to the stud work, attach horizontally across vertical studs using wood or dry wall screws, the bars should be spaced at around 600mm centres. The wall should be finished using either specialist soundproofing panels or two layers of acoustic plasterboard, use an acoustic sealant to fill all edges and joins of the boards.
When you are considering any wall soundproofing solution you should also consider flanking noise. Noise that transfers through a building through voids such as floor and ceiling cavities between the joists, Sound will not only transfer directly through a wall it will find weaker points and easily pass between rooms through these areas. The best method for stopping flanking noise is to insulate between floor and ceiling joists, insert DFM acoustic insulation against the wall between the joists, filling the depth of the cavity and coming into the room about 600mm. This will block and absorb any sound that will transfer over or under your wall. We recommend that you use 100mm 80kg/m³ DFM for this.
Alternative Stud Wall Soundproofing Method
If you do not want to go to the extent of removing the existing plasterboard you can increase the sound insulation of a stud wall by using direct to wall soundproofing panels. Applying this type of panel over the existing plasterboard will help reduce airborne noises passing between rooms. Insulate a wall that does not require high levels of noise control the thin wall panels are quick and easy to install, and the level of noise they will reduce will mean poorly insulated stud walls should give you an additional level of privacy in your home.
The Sound Solution based in York, North Yorkshire soundproofing and acoustic insulation supplies UK