Johns Manville (JM) is a Berkshire Hathaway Company that offers services in roof insulation, building insulation, commercial roofing, and exclusive products for commercial, residential and industrial purpose. They manufacture and supply a wide range of collection that include filtration media, commercial roofing membranes, mats, reinforcement, and building insulation by formaldehyde-free fiberglass. The company offers its operation through 45 manufacturing facilities so far across North America, China and Europe. More than 7,000 people are employed in the company that offers their services in transportation, automotive, appliance, HVAC and aerospace markets. The company has a transaction of near about $2.5 billion every year.