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How Do You Soundproof a Wall Between Two Houses?

A Comprehensive Guide to - Party Wall Soundproofing

Whether you're living in a semi-detached house or a terraced property, noise from your neighbours can often be an unwelcome intrusion. From loud music to late-night conversations, these sounds can disrupt your peace and quiet. Fortunately, there is a solution - party wall soundproofing. This process involves insulating the wall between two houses to reduce noise transmission. In this blog post, we'll explore how you can soundproof a wall between two houses effectively.

Understanding the Basics of Soundproofing:

Before delving into the specifics of party wall soundproofing, it is essential to understand the basics of sound and how it travels. Sound waves are vibrations that travel through the air or other mediums and reach our ears. When these waves hit a hard surface like a wall, they cause it to vibrate, transmitting the sound further. Soundproofing aims to reduce these vibrations and hence minimize noise transmission. There are four key principles involved in effective soundproofing: adding mass, absorption, decoupling and resilience.

Adding mass makes it harder for sound waves to vibrate the wall; absorption involves using materials that dampen sound; decoupling and resilience separates the parts of the wall to prevent vibration transfer.

Party Wall Soundproofing Techniques:

  1. Absorption: Acoustic Mineral Wool insulation is excellent at absorbing sound and reducing any reverberation. Acoustic mineral wool also turns sound energy into heat, making the party wall more energy efficient.

  2. Use Mass Loaded Vinyl (MLV): MLV is a thin but heavy sheet made with metal particles embedded in vinyl. It's highly effective at adding mass without taking up too much space. You can install MLV directly onto your existing wall or in between layers of acoustic plasterboard for increased soundproofing performance.

  3. Mass: Adding multiple layers of acoustic plasterboard to the wall soundproofing system helps to block the sound transfer between the party wall.

  4. Decoupling: This technique involves creating a gap between the two sides of the wall to prevent sound vibrations from passing through. This can be achieved by using resilient bars or resilient clips and hat channels.

Professional vs DIY Party Wall Soundproofing

While there are many DIY solutions available for party wall soundproofing, it is important to consider whether you have the necessary skills and tools and to carry out these tasks effectively, along with the required time. Installing acoustic panels or MLV, applying Green Glue, or insulating with fiberglass can be relatively straightforward tasks if you're handy around the house. However, decoupling techniques often require more advanced skills and may need professional installation to ensure they're done correctly.

Moreover, if you're dealing with severe noise issues or want to ensure maximum sound reduction, hiring a professional could be your best bet.


Living next door to noisy neighbours doesn't have to mean endless nights of disrupted sleep or days filled with unwanted sounds. With effective party wall soundproofing techniques, you can significantly reduce noise transmission and enjoy a peaceful living environment.

Remember that each situation is unique, so what the best soundproofing solution will depend on your specific circumstances - including the type of noise you're dealing with, and your property type.

Either way, a quieter, more peaceful home is well within your reach. Get in touch today to wave goodbye to those unwanted sounds!

Wave Soundproofing Company Logo. Soundproofing Installations in Bristol, Bath, South West and Wales

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