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    Chemical Cleaning of Historic Structures—A Practical Approach

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    The aesthetic appeal of a building's facade is the visual vanguard of the entire building. Chemical cleaning of a building's exterior, if approached intelligently, can result in the building's substrate being returned to its original condition.

    This paper outlines a step-by-step procedure that should be followed by the five key parties who share the responsibility for the cleaning of an historic structure. The duties and obligations of the building owner, the architect, the local preservation officer, the manufacturer of cleaning products, and the contractor are explored and some of the common pitfalls are explained.

    The appendix includes a sample set of exterior building cleaning specifications.


    masonry, masonry cleaning, historic structures, building restoration, chemical cleaning

    Author Information:

    Rudder, TH
    President, Hydrochemical Techniques, Inc./Ramco Technologies, Inc., Hartford, CT

    Committee/Subcommittee: E06.24

    DOI: 10.1520/STP20016S