Wall Paintings Aspects of Deterioration and Restoration

University of Applied Science and Art, Hildesheim/Holzminden/Gottingen, Institute of Restoration and Conservation, Bismarckplatz 10-11, D 31134 Hildesheim, Germany 

This chapter is presented from the point of view of a microbiologist but it will not be confined to the known facts of deterioration by soluble salts and biodeterioration. It will necessarily focus on the interactions between the different causes of damage and the effects of interventions, which may exacerbate the deterioration processes. 

Wall paintings may be situated in completely different locations, which affect the deterioration process to a large extent. Facade paintings are, for example, subject to direct weathering and the extent to which they are affected by rain, hail, snow or wind depends on the specific construction of the building. Additionally, environmental and air pollution will endanger these paintings in a different 

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