What Are M20 Wall Panels?
M20 Wall Panels are high-density acoustic fibre panels manufactured specifically to reduce airborne noise through lightweight or poorly performing walls.
They combine:
- High mass
- Damping performance
- Excellent acoustic absorption characteristics
This makes M20 one of the strongest “direct-to-wall” soundproofing solutions available when you need serious noise reduction without building a full independent stud wall.
Key Features of M20 Acoustic Panels
- High-density core engineered for sound reduction
- Very effective on party walls between neighbours
- Slim build-up compared to stud systems
- Works on brick, block, stud or dot-and-dab walls
- Reduces mid- and high-frequency noise exceptionally well
- Can be combined with plasterboard for maximum performance
Ideal for:
- Bedrooms and living rooms
- Terraced and semi-detached properties
- Flats and apartments
- Offices and commercial rooms
- Music practice rooms
Typical Thickness & Composition
M20 Panels are usually supplied at:
- 20mm thickness
- Weight approx. 18–20 kg/m² (depending on manufacturer)
- Fixed directly to existing walls using adhesives or mechanical fixings
- Finished with acoustic plasterboard for high performance
Acoustic Performance Table – M20 Panel Build-Ups
Below is a simplified performance guide showing how different M20 systems typically perform once fully installed and plasterboarded.
Actual results vary based on wall type, construction, sealing and installation by specialists such as West Sussex Soundproofing Ltd.
| System Build-Up | Description of Build | Expected Airborne Noise Reduction (dB) | Performance Rating |
|---|---|---|---|
| M20 Panel Only | 20mm M20 panel fixed directly to wall, skimmed | Up to 6–8 dB improvement | ★★★☆☆ (Moderate) |
| M20 + 12.5mm Acoustic Plasterboard | M20 panel + 1 layer high-density acoustic board | Up to 10–12 dB improvement | ★★★★☆ (Strong) |
| M20 + Double Acoustic Plasterboard (2 x 12.5mm) | M20 panel + 2 layers 12.5mm acoustic plasterboard | Up to 14–16 dB improvement | ★★★★☆ (Very Strong) |
| M20 + Acoustic Plasterboard + Add Mass (Tecsound layer) | M20 + plasterboard + mass barrier | Up to 17–19 dB improvement | ★★★★★ (High Performance) |
| M20 + Independent 50mm Stud + Acoustic Boards | M20 base layer + decoupled stud + insulation + double acoustic boards | 20–25+ dB improvement | ★★★★★ (Studio Grade) |
Why M20 Panels Work So Well
1. High Mass
Soundproofing is largely about adding mass.
M20 provides density equivalent to multiple layers of plasterboard in a single panel.
2. Damping Effect
The fibrous structure disrupts airborne soundwaves, absorbing and reducing noise energy before it reaches the plasterboard finish.
3. Slimline System
Unlike stud walls which can take 100–150mm from the room, M20 solutions remain between 35mm and 60mm, depending on the build-up.
4. Ideal for Party Walls
M20 is one of the most effective solutions for:
- Neighbour noise
- TV and conversation noise
- Light music
- Traffic noise
- General domestic airborne sound
Where M20 Panels Are Installed
✔ Party walls in houses and flats
✔ Brick or block walls with poor sound insulation
✔ Dot-and-dab plasterboard walls
✔ Home offices
✔ Bedrooms & living areas
✔ Studios or music practice rooms
✔ Commercial units needing sound separation
Professional Installation – Why It Matters
To achieve the full acoustic benefits of M20 Panels, professional installation is essential.
Common mistakes like gaps, poor bonding, incorrect sealing or loose boards can reduce the final performance dramatically.
West Sussex Soundproofing Ltd are specialists in:
- M20 acoustic panel installation
- Party wall soundproofing
- High-performance plasterboard systems
- Acoustic membrane integration
- Full room upgrades across Brighton, Hove, Worthing and wider Sussex
Their expertise ensures the system delivers the maximum possible airborne noise reduction every time.
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