Assessing Cleaning and Water-Repellent Treatments for Historic Masonry Buildings (The Cleaning and Waterproof Coating of Masonry Buildings)
book
by Robert C. Mack.
U.S. Department of the Interior, National Park Service, Preservations Assistance Division, Technical Preservation Services, 2000.
This brief provides technical advice on selecting the most appropriate means of cleaning masonry buildings and discusses the problems presented by water repellent and waterproof coatings for such buildings.