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Roof Coatings Manufacturers Association
National trade association representing the manufacturers of cold-applied coatings and cements used for roofing and waterproofing, as well as the suppliers of products, equipment, and services to and for the industry.
http://www.roofcoatings.org/
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Stone Roofing Association
Information on the geological history and use of sandstone and limestone roofing in the UK. Of interest to architects, conservation professionals, and roofers.
http://www.stoneroof.org.uk/
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