Aislamiento acústico a ruido aéreo de bajante, con lanas minerales

Aislamiento acústico a ruido aéreo de bajante de 90 mm de diámetro, realizado con manta de lana de vidrio, according to UNE-EN 14303, recubierto por una de sus caras con aluminio reforzado that acts as vapor barrier, of 30 mm of thickness, for the insulation of air ducts in air conditioning, thermal resistance 0.86 m²K/W, thermal conductivity 0.035 W/(mK); with 39.76 dB of global reduction index, Rw, according to UNE-EN 14366; providing a improvement of the global reduction index weighted A of 9.43 dBA, in downcomers with medium flow of 60 l/min; disposed around the downcomer in the form of a coquilla and fixed with plastic bridges. Including self-adhesive tape for sealing joints.