The system of Liadur Noise Barriers provides not only for high acoustic efficiency, but owing to its structural design, it also provides for easy assembly with minimum maintenance requirements and with an extensive variability of architectural design.
The surface of the absorption layer (the face) is made in rubber moulds or in wooden forms, which enables a large selection of shapes. The rear side of the units may be surface-finished as well, as required.
The colours used are by Bayer; the concrete mix is dyed. The units may be dyed in their full thickness or only the face of the absorption layer may be tinted.