Johns Manville, a Berkshire Hathaway company, is a leading manufacturer and marketer of premium-quality building insulation, commercial roofing, roof insulation, and specialty products for commercial, industrial, and residential applications. In business since 1858, JM has annual sales in excess of $2 billion, employs approximately 7,500 people and operates 40 manufacturing facilities in North America, Europe and China.
Johns Manville Roofing Systems is dedicated to helping you defy the elements with the most extensive offering of low slope roofing solutions. To construct highly protective, energy efficient and cost effective roofs, an integrated JM system delivers more value than individually purchased components. Tested and proven to work together, the elements of a JM roofing system are designed to meet the specific requirements of each individual building.
Our portfolio of roofing systems includes a complete line of single ply, built-up and modified bitumen membranes, including Cool Roof solutions. They are complemented by quality thermal insulations, cover boards, adhesives, cements, roof coatings and specialty roofing products — all with the convenience of a single-source provider.