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Acoustic materials

Isomat KE

High-mass visco-elastic panel for sound insulation.

Reduces airborne and structure-borne noise

Used independently or in sandwich panels

Ideal for walls, floors, and partitions

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Description

Isomat KE is a visco-elastic mass panel designed for effective sound insulation of walls, floors, ceilings, doors, and partitions. Its visco-elastic core reduces both airborne and impact noise, making it suitable for construction, interior, and transport applications. Isomat KE retains its shape and dimensions and is resistant to moisture, oils, fuels, and standard cleaning products. It can be used as a standalone soundproofing layer or as the core of sandwich panels such as Merfoplex, combining structural stiffness with high acoustic performance.

Core features
Fundamental properties that define performance.
CE certification
Sound insulation
Fire resistance
Smoke control
Burglary resistance
Bullet resistance
Air and gas tightness
Additional functions
Additional functions that enhance safety and control.
Anti-panic function
Access control
Specialised options
Solutions for highly specific technical environments.
Ventilation
ATEX model
Transformer model
Properties

The panel provides strong sound insulation performance, tested according to EN 140-3 and ISO 717 over a wide range of frequencies. The visco-elastic core is fire-retardant and certified according to DIN 4102 Class B2, ensuring safe use in buildings, vehicles and interior applications.

The panels are available in two versions:

  • KE 8 (3 mm thick, 8 kg/m²)
  • KE 14 (5.2 mm thick, 14 kg/m²)

The material has a high bulk density of 2,800 kg/m³. It absorbs vibration energy, reduces impact noise and maintains long-term acoustic and mechanical performance. At the same time, it remains easy to handle and install.

Applications

Isomat KE is suitable as a standalone soundproofing layer or as the core of sandwich panels. Typical applications include ship interiors, building renovations, vehicle floors, and high-end interior constructions requiring high levels of sound insulation. The combination of mass, visco-elasticity, and fire-retardant properties makes it ideal for environments where both acoustic performance and safety are essential.

Downloads and specifications

For complete technical specifications, manuals and certificates, refer to the documents below.
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Answers to common questions

Answers to the most common technical and practical questions.
Can the acoustic performance be predicted for a specific space?

Merford can perform acoustic analyses or simulations to predict noise levels and reverberation times based on material selection, room dimensions, and finishes, ensuring the right solution is designed.

How maintenance-friendly are these materials?

Our acoustic materials generally require minimal maintenance. Dusting and cleaning is usually sufficient to maintain long‑term performance.

What is the difference between vibration isolation, sound insulation, and sound absorption?
  • Vibration isolation reduces mechanical vibrations from machines or equipment, preventing transmission to the building structure or floor.
  • Sound insulation prevents sound from passing from one space to another, e.g., between rooms or to the exterior.
  • Sound absorption reduces echo and reverberation within a space by damping sound waves, improving comfort and speech intelligibility.

Merford materials can provide one or more of these effects depending on the product type, such as absorption panels for rooms or isolation around ventilation units.