The heavy mass range is made up of viscoelastic bitumen that is used to deaden vibrations and provision of mass, both in the building sector and in the industrial environment.
The SE50AL-ML foam is an alveolar acoustic foam made up of polyurethane (2,000x1400 mm) and which is 50mm thick (a 20 mm heel/30 mm spikes). A PVC heavy mass (5 Kg/m2) is stuck between the foam and the adhesive in order to improve its transmission performances.
The SE30FL-ML foam is a flat acoustic foam made up of polyurethane (2,000x1,400 mm) and which is 30 mm thick. Its black polyurethane film protects it from dampness, dust, oil emissions, which is a deciding factor in several situations.