Johns Manville is known for being major manufacturer of building products, particularly insulation, roofing, and engineered products, and historically known for asbestos manufacturing that led to massive litigation and bankruptcy. Founded in 1858 as H.W. Johns Manufacturing Company, Johns Manville became largest asbestos producer in US in 20th century, known for asbestos insulation, roofing, and cement products, which later caused health issues like mesothelioma and led to thousands of lawsuits and Chapter 11 bankruptcy in 1982, one of largest bankruptcies at time, creating trust fund for asbestos victims. After emerging from bankruptcy in 1988 and being acquired by Berkshire Hathaway in 2001 for 1.8 billion, Johns Manville is now known for fiberglass insulation made in plants like Defiance, Ohio and Innisfail, Alberta, Canada, with Formaldehyde-free batts sold at Home Depot, mineral wool insulation, and commercial roofing membranes like EPDM and TPO. It is also known for engineered products like glass fibers and filtration media used in automotive and industrial applications. Johns Manville is known as global company with 40 plus plants, 7,000 employees, and revenue around 3.5 billion, owned by Warren Buffett's Berkshire Hathaway, with reputation for innovation in insulation and roofing. So Johns Manville known for insulation and roofing products today, and historically known for asbestos and subsequent bankruptcy that shaped asbestos litigation in US.
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