Soundproofing panel, waterproof and incombustible, suitable for the realization of stratified walls, made of a double layer of 20 mm thick rock wool and density 100 kg/m3 with an interposed element in the sound-resistant polyolefin polymers of 3 mm thickness and mass 4 kg/m2.
The finished product is enveloped with anti-dusting polyethylene of blue color, showing silkscreen printing identified by the material.