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Upgrading and sound proofing a stud wall

Cross-section of a soundproofed stud wall

Typically, stud walls are built with physical separation of a room in mind. There is little consideration given to the acoustic performance of that wall. In many cases the wall will simply be constructed of 12.5mm plasterboard either side of a 50mm stud frame.
Situations where this may be a problem is when that separation is between two bedrooms or a bedroom and a bathroom. Post fitting of soundproofing should make it  impossible to discern loud conversation.

We offer two methods for upgrading a stud wall

Method 1

For a fast and effective method of upgrading a poorly soundproofed stud wall you can glue our SM20 panels direct to the face of the wall.  Either side can be chosen. Over the top of this can be added a double layer of acoustic plasterboard. If space is an issue then just choose one layer of acoustic plasterboard. This will dramatically improve the performance of the stud wall. Choose the calculator to the right "SM20 Solution"
If using only one layer of acoustic plasterboard we recommend 15mm.
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Method 2

To upgrade and soundproof the wall you can also remove the original plasterboard from one of the faces of the stud wall. Once removed you will infill with the appropriate thickness of acoustic mineral wool (choose 75mm wool for a 75mm wall) We then strongly recommend adding the 16mm deep resilient bars to that wall. Finish the solution with two layers of 12.5mm acoustic plasterboard. The range of calculators to the right simply reflect different size stud walls and different material options.

Both of these methods will drastically improve the acoustic performance of your wall.  All of our solutions involve the use  acoustic plasterboard. We then offer the addition of a tecsound 50 upgrade or for those who want maximum performance the SBx board. An award winning German designed soundproofing board.

Don't forget to soundproof your plug sockets too. You can find out more in this article.


Electrical Sockets
If you are thinking of refitting electrical sockets back into the wall. you might be advised to line your electrical boxes with  our acoustic putty. Remember a 1% hole in your soundproofing surface can reduce performance of your soundproofing by up to 10%. Lining your plug sockets will go some way to reducing this leakage.


Sound proofing basics
When soundproofing a wall it is necessary to improve three basic components.

  1. The mass of the wall- This is normally achieved by adding acoustic plasterboard. 
  2. The Resilience of the wall- This is the springiness of the wall. Without this, the addition of the mass will have very little impact. Here the use of the resilient bar is vital as it will greatly enhance the performance of the plasterboards. For even greater resilient performance Genie clips should be considered. 
  3. The sound "absorbency" of the wall. By adding different materials the sound energy gets absorbed more easily within the wall. The most cost effective method is the use of acoustic mineral wool.
  4. A fourth component that can be added is a barrier component is a membrane that acts to block the sound but not by mass alone. For most of our systems we offer Tecsound 50 as a cost effective method of upgrading any soundproofing system.


Understanding Performance
Below you will see a performance table.

The total performance which is normally quoted on most sites refers to the performance of an average wall with soundproofing materials added

We also give an indication of performance uplift. Remember that every 10dB of performance uplift corresponds to roughly a 50% improvement in the performance of the wall. So 20dB would indicate a 75% Improvement over and above the original wall. 

The GenieClip™ 
For those customers wanting to incorporate the highest performance materials into their soundproofing projects we introduce The GenieClip™ solution. The GenieClip™ is a very high performance solution that provides the best single component we know of when soundproofing a wall. The clip itself outperforms a resilient bar by around 7 dB, an impressive amount.



 

Key Points:

  1. Stud wall Soundproofing in a slim and effective way
  2. Soundproofing Kit delivered direct to your door
  3. A very DIY-able upgrade
  4. Online calculator will work out your exact requirements
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Existing Stud Wall Upgrade Sound Insulation performance table

Wall Depth Gain Total system Performance airborne Typical Airborne Improvement
50mm stud. 28mm 44 dB 13 dB
50mm stud. SBx Upgrade 25mm 50 dB 19 dB
50mm stud. Tecsound 50 Upgrade 30mm 48 dB 17 dB
75mm stud. Tecsound 50 Upgrade 30mm 51 dB 20 dB ( compared to 50mm Stud)
100mm stud. Tecsound 50 Upgrade 30mm 54 dB 23 dB ( compared to 50mm Stud)
75mm stud. 28mm 47 dB 16 dB ( compared to 50mm Stud)
75mm stud. SBx Upgrade 25mm 53 dB 22 dB ( compared to 50mm Stud)
28mm 50 dB 19 dB ( compared to 50mm Stud)
100mm stud. SBx Upgrade 25mm 56 dB 25 dB ( compared to 50mm Stud)
SM20 28mm 47 dB 16 dB ( compared to 50mm Stud)
SM20+ SBX upgrade 28mm 47 dB 16 dB ( compared to 50mm Stud)
The base case scenario for a single stud wall is apporoximately 31dB this assumes no mineral wool and 12.5mm wall plasterboard (Wall board) fixed direct to the stud. 
Compare all our wall solutions here.