Silent Panel 5kg/25mm — MLV & Acoustic Foam Composite Panel
The Silent Panel is a dual-layer acoustic composite panel designed for enclosures, plant rooms, server rooms, and engine rooms where standard acoustic foam alone is not sufficient. It combines a 25mm layer of 90kg/m³ acoustic foam with a 5kg/m² mass loaded vinyl barrier, bonded together and finished with a self-adhesive backing for direct installation onto walls and ceilings.
Most acoustic foam products absorb sound — they do not block it. The Silent Panel does both. The MLV layer adds the mass needed to reduce sound transmission through the panel wall. The high-density foam layer absorbs what remains inside the enclosure, preventing reflections from finding alternative exit points. Together they deliver 31dB of sound reduction in a single 28mm panel, without requiring separate barrier and absorption layers to be installed independently.
The 5kg/25mm is the entry-level specification in the Silent Panel range and the appropriate choice where space is limited, the noise source is moderate in intensity, or the primary problem is high-frequency noise rather than low-frequency machinery noise. At 28mm total thickness it is the most profile-efficient panel in the range. Where low-frequency noise is a significant component of the problem, or where higher absorption performance is required, the 5kg/50mm or 10kg/50mm should be considered instead.
Where to Use the Silent Panel
The Silent Panel is designed for enclosed or semi-enclosed spaces where machinery, equipment, or mechanical plant generates persistent noise that needs to be contained.
Common applications include:
- Server rooms and IT equipment rooms — server racks, UPS units, and cooling equipment generate constant broadband noise. Lining walls and ceilings with Silent Panel reduces noise escape into adjacent office spaces without affecting ventilation or access.
- Plant rooms — HVAC equipment, pumps, and mechanical plant running continuously in plant rooms creates both airborne and structure-borne noise. Silent Panel installed on internal wall and ceiling surfaces significantly reduces transmission to occupied areas.
- Engine rooms and generator enclosures — where combustion engines or generators are housed in dedicated enclosures, Silent Panel provides the mass and absorption needed to contain high-intensity broadband noise across the mid and high frequency range.
- Compressor enclosures — air compressors generate significant noise in workshop and industrial environments. Silent Panel is used to line custom-built enclosures, reducing noise levels at the operator position and in surrounding areas.
- Custom acoustic enclosures — where bespoke enclosures are built around specific equipment, Silent Panel provides the acoustic performance in a single product, simplifying specification and installation.
Product Benefits
- 31dB sound reduction in a single panel. The combination of MLV and high-density foam delivers measurable sound reduction without requiring a multi-layer installation. One product handles both blocking and absorption.
- 90kg/m³ foam density. Significantly denser than standard acoustic foam tiles. Higher density foam absorbs more effectively across the mid-frequency range and maintains structural integrity under the weight of the bonded MLV layer.
- Comprehensive fire certification. Rated Class 0 under UK building regulations (BS 476 pt 6 & 7), UL94 V-0, and Class A under ASTM E84-95. Suitable for commercial and industrial installations where fire compliance is required.
- Self-adhesive installation. Factory-applied adhesive backing allows direct installation onto prepared surfaces without additional fixings. Each panel covers 0.72m², making coverage calculations straightforward.
- One product, one installation step. Separate barrier and absorption layers are commonly used in enclosure construction but require independent installation and careful sequencing. Silent Panel eliminates this — the barrier and absorption are pre-bonded and installed together.
Installation
The mounting surface must be clean, dry, and free from oil, dust, and defects before installation. For a guaranteed bond, prime the surface with Advanced Acoustics High Bond Contact Adhesive before offering the panel into position. This is particularly important on painted, powdercoated, or porous surfaces.
The Technical Details
| Product Name | Silent Panel 5kg/25mm |
| Product Size | 600mm x 1200mm x 28mm |
| Area Covered Per Panel | 0.72sqm |
| Product Colour | Black |
| Sound Absorption Class | D |
| Noise Reduction Coefficient | 0.45 |
| Absorption at 250Hz | 0.25 |
| Absorption at 500Hz | 0.45 |
| Absorption at 1000Hz | 0.55 |
| Absorption at 2000Hz | 0.60 |
| Absorption at 4000Hz | 0.75 |
| Sound Reduction Index | 31dB |
| Product Weight | 5.4kg |
| Fire Classification | Fire Propagation Index - < 12 (BS 476 pt 6) Surface Spread of Fame - Class 1 (BS 476 pt 7) Building regs. 1991 (Fire Safety) - Class 0 (B S467 pt 6 & 7) UL94 Classification - 94 V-O Surface Burning Behaviour - Class A (ASTM E84-95) |
| Acoustic Foam Density | 90kg/m3 |
Performance Data
