Soundlag is a high performance composite acoustic lagging product developed to reduce noise from pipes, valves, fan housings and ductwork in commercial, industrial and domestic buildings. The highly dense and flexible mass layer provides excellent sound reduction properties, whilst the decoupling layer breaks the vibration path between substrate and the mass barrier, allowing the vinyl external wrap to remain flexible and optimizing the performance. The external foil facing offers a fire resistant covering and an excellent surface to join adjacent sheets. Pyrotek offers varying compositions with barrier weights from 3kg/m3 to 8kg/m3 and the decoupling layer with a choice of foam such as convoluted or plain and in thicknesses form 6mm to 50mm.