Noise in metal roofing can result from many factors or a mix of factors. Factors that could result in metal roofing noise are thermal effects; rain; wind action; weather extremes such as hail, thunder; structural movements resulting from lack of rigidity, ground movement, structural settlement, shrinkage, ground movements or excavations; access from animals and vermin (such as possums); falling debris such as tree matter; vibration from passing vehicles, aircraft, nearby equipment; etc. The type of noise, frequency, patterns, volume, duration and regularity can be quite variable.
It is the designer’s responsibility to identify potential cause(s) of noise and then incorporate within the roof design suitable details to minimise the potential or severity of noise.