1. Plasterboard layer, 12,5 mm thickness
2. 10 - 20 mm acoustic insulation supplied in
    panels and produced using fibres and
    granules of SBR (Styrene Butadiene Rubber)
    hot compacted using a polyurethane adhesive.
    A non-woven, non-stretch synthetic membrane
    is applied on both sides for added protection.
    The dimensions of each panel are 1,2 m long
    and 1 m wide with a density of 800 kg/m³
3. Plasterboard layer, 12,5 cm thickness
4. Mineral wool, density 40 kg/m³, 50 mm thickness
5. Plasterboard double layer, 25 mm thickness
6. Metal stud, 50 mm thickness
7. Underwall strip