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The author proposes a decision chart for the use of building owners, designers, and contractors to assist with the selection of an appropriate technique for cleaning masonry walls. The decision chart considers the nature of the masonry, the source of the soiling, and most importantly the reason for the cleaning initiative. The decision chart is presented as a suggested approach and the author requests constructive criticism.
masonry, cleaning, quality control
Senior restoration maintenance officer, Restoration Services Division, Engineering and Architecture Branch, Parks Canada, Ottawa,