Are you frustrated by voices, music, or TV from next door? This guide is for anyone living in a semi-detached, terraced house, or flat who wants to block out neighbour noise, without major building works or confusion over which products work best.

Why Does Noise Travel Through Walls?


Most UK homes have “party walls” built from brick, block, or studwork. These often lack the mass or isolation to block airborne noise, and small gaps or cracks let sound leak through.
  • Airborne noise (voices, TV, music) passes through solid walls and even tiny gaps.
  • Flanking noise can travel around the wall via floors, ceilings, sockets, or joists.
  • Key reason: If you can hear your neighbours, your wall needs more mass, better sealing, or decoupling.

Basic Step-by-Step: How to Soundproof a Wall Against Neighbours

  1. Seal All Gaps and Edges:
    • Use acoustic sealant around skirting boards, sockets, and any cracks.
    • Even small gaps can let a surprising amount of noise through.
  2. Add Mass with Soundproofing Mat:
    • Apply 10kg Soundproofing Mat directly to the wall if it is timber stud composition or M20 Soundproofing Panels if it is brick, for a dense, flexible barrier.
    • These products are effective for airborne noise and is easy to install over existing surfaces.
  3. Upgrade with Acoustic Plasterboard:
    • Acoustic plasterboard  must be fixed over the soundproofing mat to further increase mass and stiffness.
    • For best results, use two layers, staggered and sealed.
  4. Decouple with Isolation Bars (Optional):
    • For maximum performance, install isolation bars or resilient channels between the wall and plasterboard.
    • This breaks the direct path for sound vibrations.
  5. Fill Cavities with Acoustic Mineral Wool (if stud wall):
    • If your wall is a stud (timber frame) type, fill the cavity with dense mineral wool before adding mass.
    • This absorbs sound inside the wall.
  6. Finish and Decorate:
    • Tape, skim, and paint as usual.
    • Ensure all edges are sealed for best performance.

 

Advanced Acoustics Wall Soundproofing Systems


We’ve bundled our most effective solutions into complete systems—so you get the right products, fast.
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Installation Tips & Common Mistakes

  • Always seal every edge and gap—sound finds the weakest point.
  • Stagger plasterboard joints for better performance.
  • Use isolation bars if space allows; even a small air gap helps.
  • Don’t forget flanking paths—treat floors and ceilings if noise still leaks.
  • If in doubt, ask for advice—our team responds within 24 hours.

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Still unsure which system is right for your wall?