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Merfopol.
Acoustic materials

Merfopol

Durable sound absorbing panel from closed-cell polyethylene foam.

Weighted sound absorption coefficient up to αw = 0.80

Resistant to water, oil, fuels, and many cleaning solvents

Durable and 100% recyclable material

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Description

Merfopol is a sound-absorbing and thermally insulating panel made from closed-cell polyethylene (LDPE) foam, designed for environments exposed to moisture, dirt, and weather conditions. Its cellular structure provides effective acoustic performance and thermal insulation, while the material is 100% recyclable and highly durable. Standard panel dimensions are 1,200 × 1,000 mm, with thicknesses of 30, 40, and 50 mm.

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

Merfopol delivers a weighted sound absorption coefficient of up to αw = 0.80, depending on thickness: αw = 0.50 at 25 mm, αw = 0.70 at 40 mm, and αw = 0.80 at 50 mm. The material has a density of approximately 25 kg/m³ and withstands temperatures from –40 °C to +100 °C. It is resistant to water, oil, dirt, and many solvents, making it suitable for both outdoor applications and installation in machine rooms, pump housings, or keel spaces in vehicles and boats.

Applications

Merfopol is ideal for outdoor noise barriers, housings for machines, pumps or compressors, hull spaces in vehicles or boats, and other applications requiring high sound absorption, thermal insulation, and resistance to environmental influences.

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.