Johns Manville, a Berkshire Hathaway Company, is a trusted company that offers quality products and services for mechanical insulation, building insulation, and roof insulation. They even manufacture and supplies non-woven and fibers for residential, industrial, and commercial application. The company is in being since 1858. JM purchased Industrial Insulation Group in 2012. They offer advanced insulation products. Recently, they launched advanced roofing, insulation, wall covering, ducts and engineered products including JM Corbond III, JM E3co etc. The company provides its exclusive services in distinct regions of Europe, North America and China. Mary Rhinehart serves as the president and chief executive officer since 2012.