Johns Manville, a Berkshire Hathaway company, is a leading manufacturer and marketer of premium quality building and specialty products. In business since 1858, Johns Manville produces and markets insulation products for buildings and equipment; commercial/industrial roofing systems; and engineered products including high-efficiency filtration media, fibers, fabric and nonwoven mats used as reinforcements in building and industrial applications. The Denver-based company employs approximately 10,000 people and operates 55 manufacturing facilities in North America, Europe and China.
