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Plate 3.23 Edinburgh Castle. Soiling is part of its character and aids the perception of the age of the castle.

Facade complexity and soiling Soiling on buildings which is either consonant with the underlying texture of the building facade or enhances architectural details can, within certain limits, enhance the aesthetic appeal of buildings. Conversely, soiling which is dissonant with the underlying texture of a building (e.g. heavy soiling which obscures colour) or which is unrelated to the building's architecture is aesthetically displeasing. Many modern buildings are constructed of materials, or are of designs, which do not allow for consonant weathering and soiling patterns. When soiled, they are visually less acceptable than older buildings which, through the materials used or design features, allow for longer periods of consonant weathering. Soiling changes the perception of facades and can be seen to progress tlirough a sequence, with facade cleaning interrupting this progression and returning the building to an earlier stage in the cycle. Initially, light soiling on surfaces which have an uneven texture (e.g. rock faced and tooled stone) lodges mainly on horizontal and outermost surfaces of the stone. Similarly, light soiling around architectural detail adds to the visual complexity of the building by increasing contrast and shadowing effects. Verhoef (1988) argues that in northerly cities of Europe, soiling can emphasise architectural designs which for much of the year would be lacking definition due to the absence of sharp, well defined shadows.

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Guide for Practitioners - Stonecleaning PLU 7545  

The original practitioners guide based on stonecleaning research includes background on sandstone characteristics, the effects of soiling ag...

Guide for Practitioners - Stonecleaning PLU 7545  

The original practitioners guide based on stonecleaning research includes background on sandstone characteristics, the effects of soiling ag...

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