Johns Manville is a leading manufacturer and marketer of premium-quality insulation and commercial roofing, along with glass fibers and nonwovens for commercial, industrial and residential applications. Our history goes back to 1858, when the H.W. Johns Manufacturing Company began operations out of a tenement building in New York City. 

Today, our products are used in a wide variety of industries, including building products, aerospace, automotive and transportation, filtration, commercial interiors, waterproofing and wind energy. A proud member of the Berkshire Hathaway family of companies, we serve customers in more than 80 countries around the globe.

Our core values – People, Passion, Perform and Protect – are embedded in everything we do. These values not only guide the way in which we conduct business, but they also serve as the foundation for our everyday words and actions. We strive to deliver positive and powerful JM Experiences to everyone with whom we interact and hope to be the Employer of Choice and the Supplier of Choice.