Vibroacoustic material Comfortmat Zenith

Vibro-acoustic material Comfortmat Zenith

Comfortmat Zenith is the most effective material in the Aerospace line of vibro-acoustic products, combining advanced anti-vibration and sound-insulating properties in a single layer. Thanks to its robust multi-layer construction optimized for maximum vibration and noise attenuation, Zenith is designed for the most heavily loaded areas of vehicle bodies where the aim is to achieve top acoustic comfort without compromise. The overall thickness of 9 mm, including a 3 mm heavy sound-insulating membrane, enables effective vibration absorption while significantly reducing the transmission of airborne noise. The material achieves an acoustic loss factor (MLF) of up to 0.62, surpassing most conventional anti-vibration materials. In addition, it is equipped with a rigid 100-micron Scale One aluminum foil that ensures dimensional stability, resistance to mechanical damage and improves the transfer of damping energy into the vehicle structure. Zenith is therefore especially suitable for floors, wheel arch areas, engine bay bulkheads, center tunnels or the rear of the vehicle where significant attenuation is required in a single application. The result is exceptionally high effectiveness while maintaining a reasonable surface weight not exceeding 9 kg/m². This represents an average weight saving of 35–40 % compared to common two-layer applications, which is crucial especially when soundproofing electric vehicles, sports cars and anywhere the low weight of materials is a priority.

About Comfortmat Aerospace technology

The Aerospace range materials represent a new generation of vibro-acoustic solutions that combine anti-vibration and sound-insulating functions in a single step. Unlike traditional damping layers that often focus only on suppressing vibrations or require multi-stage application, Aerospace uses an advanced sandwich structure capable of effectively absorbing vibrations while significantly reducing sound transmission through body panels.

The core of the technology is a vibro-acoustic layer with foamed granules – lightweight elastic particles with a bulk density of approximately 0.02 g/cm³, evenly dispersed in a polymer matrix with a density of 1.25 g/cm³. The resulting mix has a final bulk density of 0.58 g/cm³, which allows achieving a high level of damping without a significant increase in weight. The combination of two different acoustic environments – a heavy matrix and light, resilient granules – increases the ability to absorb and scatter vibrations across a wide frequency spectrum. This structure also helps improve sound insulation, including in the critical low-frequency range.

The Aerospace technology thus offers an exceptional performance-to-weight ratio, which is a key parameter particularly for electric vehicles, sports cars and professional soundproofing where every extra kilogram is undesirable. The materials exhibit an acoustic loss factor (MLF) of up to 0.62 (for Comfortmat Zenith) in the range -10 to +40 °C, which is at or above the level of the most effective anti-vibration materials on the market. High adhesive strength in the range of 11 to 16 N/cm (depending on the material type) ensures perfect bonding even on vertical or curved surfaces without risk of detachment.

Beyond acoustic parameters, Aerospace materials also have a significant impact on body stiffness. Flexural strength tests show that, for example, the Galaxy and Zenith models increase resistance to sheet deformation even more than conventional anti-vibration materials – thus contributing to the mechanical stability and durability of the whole part. Low water absorption (under 0.7 %) and resistance across a wide temperature range – both in extreme heat and cold – are standard.

Key features

• Combines anti-vibration and sound-insulating effects in a single two-layer construction.
• With a thickness of 9 mm and a surface weight of 8.98 kg/m² it is ideal for areas with high vibration and noise loads.
• The vibro-acoustic layer with foamed granule technology absorbs vibrations across a wide frequency spectrum.
• The heavy sound-insulating membrane (3 mm) significantly reduces airborne noise transmission through the bodywork.
• Acoustic loss factor (MLF) reaches up to 0.62 – one of the highest values among self-adhesive materials.
• Significantly reduces sheet metal resonances and increases their stiffness.
• Scale One surface foil (100 µm) ensures dimensional stability, protects against damage and increases the transfer of damping energy.
• High adhesive strength above 13 N/cm ensures trouble-free application even on vertical surfaces.
• Water absorption under 0.7 % for long-term moisture resistance.
• Non-flammable composition meets strict safety requirements – suitable even for electric vehicle interiors.
• Resists long-term and short-term thermal stress (-40 to 90 °C), stable even in extreme conditions.
• Non-flammable composition meets enhanced safety requirements for interior and engine bay applications. 
• Weight savings up to 40 % compared to common two-layer applications – ideal for sports and electric vehicles.

Material composition

Comfortmat Zenith uses a multi-layer sandwich construction designed to achieve maximum vibration and noise attenuation in a single application. The layers are optimized to work together – while the vibro-acoustic core eliminates structural vibrations, the heavy membrane attenuates airborne noise transmission. The result is a material with extreme efficiency and excellent mechanical properties.

• Vibro-acoustic layer (6 mm)
  A polymer matrix with foamed low-density elastic granules effectively absorbs vibrations over a wide frequency range.

• Sound-insulating membrane (3 mm)
  A heavy elastic component applied to the surface of the core that significantly limits noise transmission through body parts.

• Scale One aluminum foil (100 µm)
  A surface layer with a matte non-slip finish that increases dimensional stability, the transfer of damping energy and protects the material from mechanical damage.

How to apply

Comfortmat Zenith is applied in a single layer directly to a cleaned and degreased metal surface. Due to its high adhesive strength, the use of a pressure roller is not necessary; thorough manual pressing over the entire area is sufficient. For a perfect result, however, rolling is recommended, especially on more complex or vertical surfaces. Considering the 9 mm thickness, the presence of a heavy insulating membrane and MLF 0.62, the material is suitable for the most heavily loaded areas of the body where maximum attenuation is required:

• floor
• rear wheel arches
• center tunnel
• engine bay bulkhead

About Comfortmat materials

Evaluation

• Damping materials for vehicle soundproofing Anti-vibration materials
• Damping materials for vehicle soundproofing Vibroacoustic materials
• Damping materials for vehicle soundproofing Soundproofing (noise-proofing) materials