Mist blasting is very effective in cleaning a range of surfaces including historical monuments, statues and various brick and stone surfaces. The mist blasting technique is a variant of compressed air pressure blasting; it uses compressed air as a conveyor with blasting material suited to the substrate. With small, variable amounts of water, a fine mist is created to bind dust. Blasting pressure, blasting material and the amount of mist are selected corresponding to the object and substrate.
The advantages of this procedure are the low moisture load on the facade and the high but not aggressive cleaning effect. The practically dry blasting material, which is left over, can usually be disposed of as building rubble. In building site practice it has also proved to be an advantage as power and water connections are not necessary.
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Photo: City Hall, Dublin
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