Tremco Incorporated is a manufacturer of roofing materials, sealants, and waterproofing products. The company was founded in 1928 and is headquartered in Beachwood, Ohio. Tremco has manufacturing facilities in the United States, Canada, and Europe, and its products are sold in more than 80 countries around the world. Tremco is a subsidiary of RPM International Inc., a publicly traded holding company that owns a number of specialty chemical companies.