All likely sources of unwanted external and internal noise should be identified in order to establish the degree of attenuation required to suit the building’s function. As acoustic performance is heavily dependent upon the selection of materials (especially the deck and thermal insulation), early identification of the requirement may assist the design selection process.


On lightweight, wide-span structures, noise from heavy rain is often overlooked in design. However, the inherent flexibility of single ply membranes, on the appropriate insulation, provides for good attenuation when compared with rigid sheet systems.