M.A.D.
High-density acoustic membrane for superior low-frequency sound insulation
Bituminous acoustic membranes for low-frequency insulation — 2 / 3 / 4 / 6 mm (4 and 6 also self-adhesive).
M.A.D.
Danosa M.A.D. (Membrana Acústica Danosa) is a high-density bituminous acoustic membrane specifically engineered to improve the sound insulation performance of lightweight building systems.
Unlike conventional mass-loaded membranes, M.A.D. not only increases the mass of the construction but also effectively reduces structural resonance. When installed within multi-layer systems, it acts as a membrane resonator, significantly improving sound insulation at low frequencies — where conventional lightweight partitions are usually least effective.
The membrane is suitable for walls, suspended ceilings, floors, ventilation systems, metal structures and industrial noise control applications. It provides an efficient, environmentally friendly alternative to traditional lead sheets.
How it works
Unlike conventional mass-loaded membranes, Danosa M.A.D. improves sound insulation through three complementary mechanisms. Their combined effect provides significantly better acoustic performance, particularly at low frequencies.
- Increased Mass
The membrane increases the surface mass of lightweight constructions, improving airborne sound insulation according to the mass law.
- Anti-Resonance Effect
The viscoelastic bituminous core absorbs structural vibrations and reduces the resonance of plasterboard, steel sheets and other rigid panels. As a result, less vibration is transmitted through the construction and sound insulation is improved.
- Damped Composite Layer
When installed between two rigid facing materials, such as gypsum boards or other panel materials, M.A.D. forms a constrained damping layer that dissipates vibration energy and suppresses panel resonance. Within lightweight partition systems, this effect works together with the air cavity and mineral wool insulation, providing significantly improved low-frequency acoustic performance.
Sound Insulation
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