m2 Wall cladding made up of a soundproofing complex consisting of a porous textile fibre felt and an asphalt-free polymer-based synthetic sheet with a density of 2,010 Kg/m3, with a total density of 7.6 Kg/m2 and 14 mm thick, type TECSOUND FT 75, fixed to the support using contact adhesive or mechanical PVC dowel fixing, type FIJACION PT-H; self-supporting galvanised steel framework consisting of a horizontal and vertical structure with an Omega Profile; placement of the plasterboard fixed to the profiles with a thickness of 15 mm. Improvement of the overall acoustic reduction index: ΔRA = 10 dBA.