Johns Manville makes wide range of building products including insulation, commercial roofing, and engineered products for residential, commercial, and industrial applications, known for energy efficiency and fire resistance. Its main products include fiberglass insulation such as formaldehyde-free fiberglass batts and rolls for walls, attics, and ceilings, blown-in fiberglass insulation for attics, mineral wool insulation for fire protection and soundproofing, and foam insulation, made at plants in Defiance, Ohio, McPherson, Kansas, Scottsboro, Alabama, Etowah, Tennessee, and Innisfail, Alberta, Canada, sold at Home Depot and Lowes. It makes commercial roofing products including TPO thermoplastic polyolefin single-ply membranes, EPDM rubber roofing, bituminous roofing, and polyiso roof insulation for flat roofs on schools, warehouses, and hospitals, providing waterproofing and energy efficiency. It makes engineered products including glass fibers for composites used in automotive parts, wind energy, and building materials, nonwoven fabrics, and filtration media for air and liquid filtration systems used in HVAC and industrial processes. Historically, Johns Manville made asbestos insulation, roofing, cement, and brake linings from 1858 to 1980s, but exited asbestos after bankruptcy in 1982. Today, products are asbestos-free, with focus on sustainable building materials with recycled content, under Berkshire Hathaway ownership since 2001, with revenue around 3.5 billion and 40 plus plants worldwide.
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