Silphon®Kombi soundproofing mat

Silphon®Kombi sound insulation mats are a highly effective acoustic material for applications where airborne and structure-borne noise must be reduced simultaneously and where a compact, easy-to-install material solution is required. The construction is based on a heavy, elastic plastic film that is firmly bonded to a technically specified polyurethane foam. This hybrid construction combines mass, internal damping and controlled impedance matching. This effectively addresses precisely the frequency range where conventional insulation boards or pure foams reach their physical limits: low and mid-range frequencies, which are considered particularly disruptive and energy-rich.

The heavy film functions as a mechanically stable, mass-dominant barrier, ensuring that a large proportion of incident sound is directly attenuated or reflected. The PUR foam elastically couples the system to the component, minimises the transmission of vibration energy into the structure and prevents resonance or secondary vibrations in the base material. This results in an acoustically effective combination of barrier action and damping, which achieves a significant improvement in perceived quietness and operational comfort, particularly in thin-walled components such as sheet metal, sewage pipes, steel housings, hoods, units or HVAC ducts. Its low profile, flexible handling, quick installation, and easy cutting not only enable integration into new builds but also make the material ideal for retrofitting and aftermarket applications where existing systems require acoustic upgrades. Silphon®Kombi systems are resistant to ageing, permanently low-emission and odourless, making the solution suitable for use in both industrial environments and more sensitive building environments.

With this combination of mass-based transmission loss and broadband attenuation, Silphon®Kombi offers a technically mature solution for professional ductwork, duct insulation, structure-borne sound attenuation in machine rooms, sound insulation in service engineering, or for optimising acoustic quality in HVAC networks; optimised for professional use, but also suitable for domestic applications where noticeable quietness and acoustic efficiency are paramount.