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, 100mm thickness
5. Air  cavity, 50 mm thickness
6. Mineral wool, density 40 kg/m³, 100 mm thickness
7. Plasterboard layer, 12.5 mm thickness
8. Metal stud, 100 mm thickness
9. Underwall strip