Thermal wood offers the possibility of developing a noise barrier system which is: constructed from sustainable materials; low cost; aesthetically pleasing; easy to erect (preferably pre-fabricated) and capable of being constructed in novel geometric forms to ensure maximum performance in a given location with minimum visual intrusion.

A number of natural materials are possible candidates for the role of practical sustainable sound absorbers. The structural properties, surface to volume and surface to weight ratios of hemp and reeds provide the basis for the development of highly noise absorbing materials.

Reeds have a long history of being employed for roofing where they are exposed to the full range of climatic conditions, typically over many years. They maintain their geometric form when wet and shed water efficiently. Hemp is also a material which has been traditionally used for ropes exposed to considerable climatic stress.

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