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Preparation OR Pre-installation preparation
Clean and degrease the surface.
First layer – Vibro-deadening
Use Bomb Aero 4,2mm as a first layer instead of Aero 2,3mm. Since it is bitumen mastic, you have to use a heat gun to install it.
Second layer – Sound absorption
Apply the noise-absorbing material STP Biplast 10 mm as the second layer. STP Biplast is also heat-insulating material.