Bitumen-based heavy layer

soni HEAVY – Highly effective heavy bitumen layer for sound and vibration insulation soni HEAVY is an elastomer-modified heavy bitumen layer laminated with a transparent polyester film. This combination ensures a particularly robust, durable and sound-insulating surface – ideal for applications in vehicle construction, mechanical engineering and technical insulation. Thanks to its high density and material flexibility, soni HEAVY offers excellent sound insulation and effective vibration damping. It prevents metal surfaces from vibrating, booming and rattling, thereby specifically reducing sources of noise. Advantages of soni HEAVY at a glance ✔ Effective sound insulation & vibration damping → reduces both structure-borne and airborne noise ✔ High material density for maximum sound reduction ✔ Self-adhesive backing for easy installation ✔ Mechanically resilient & durable ✔ Can be combined with acoustic materials such as soni COMPOSITE or soni 491 STL ✔ Suitable for technical applications, vehicles and machinery Typical areas of application for soni HEAVY ✔ Vehicle construction: engine compartment insulation, door panels, floor panels ✔ Mechanical engineering: sound insulation for housings, bonnets, covers ✔ Enclosures & panelling: soundproofing of sheet metal and partition walls ✔ Building services engineering: insulation of heating systems, roller shutter boxes, ventilation ducts ✔ Combination with acoustic absorbers: for optimised sound insulation solutions Installation instructions for soni HEAVY The self-adhesive backing makes it easy to apply to smooth, clean and grease-free surfaces. However, for vertical or overhead installation, additional mechanical fastening (e.g. with pressure strips or screws) is required to ensure permanent secure adhesion.

soni HEAVY ALU is a sound-deadening layer made from elastomer-modified bitumen with an aluminum surface. The heat-reflecting effect of the aluminum layer provides soni HEAVY ALU with a good fire safety classification. Our soni HEAVY ALU anti-drumming layer is predominantly used for technical applications as well as in vehicle and machine construction. Applied to a metal structure, soni HEAVY ALU will effectively reduce the sound level and prevent the transmission of noise and vibration. As a sound-deadening layer, soni HEAVY ALU delivers the double effect of air-borne noise insulation and solid-borne noise attenuation.   The self-adhesive rear face serves primarily as an installation aid. In the case of installation on a vertical surface or on a ceiling, additional mechanical fixation is required.