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 mm thickness
4. Mineral wool,  density 40 kg/m³, 50 mm thickness
5. Plasterboard layer, 12,5 mm thickness
6. Equal to point 2
7. Plasterboard layer, 12.5 mm thickness
8. Metal stud, 50 mm thickness
9. Underwall strip