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5 Soiling and corrosion

Soiling of property can occur as a result of dust and smoke nuisance. Typically, problems arise as a result of deposition of particles on cars, washing and vegetation, in particular flowers, ornamentals, fruit and vegetables. The presence of indoor particle deposition and soiling is of particular concern as it increases the requirement for cleaning and decreases the enjoyment of the living environment.

Soiling and corrosion of outdoor surfaces are also a concern. Soiling by particles can impact on a number of surfaces including paint, stone and fabrics and tends to be worse for carbon based particles originating from combustion sources (Watkiss et al, 2001). The impacts vary depending on the material but can range from fading and chipping of paint surfaces on buildings and cars to soiling and loss of textile strength in fabrics (WHEA, 2002).

The costs of soiling include the additional cleaning costs, loss of amenity associated with the appearance of soiled surfaces and in the case of corrosion, repair of damaged surfaces. However, corrosion of buildings tends to be associated more with sulphur dioxide than with particles.