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.
www.roofcoatings.org
Stone Roofing Association
Information on the geological history and use of sandstone and limestone roofing in the U.K. Of interest to architects, conservation professionals, and roofers.
www.stoneroof.org.uk