Johns Manville

  • Amount in Trust: $650 million
  • Year Trust Was Created: 1988
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Johns Manville originated in New York, New York, in 1858 when the H.W. Johns Manufacturing Company was founded. H.W. Johns Manufacturing Company used asbestos to manufacture fire resistant roofing.

Johns Manville Facts:
  • Founded: 1858
  • Years Operated: 1858-present
  • Headquarters: Denver, CO
  • Business: Insulation, construction products for commercial, industrial and residential buildings
  • Asbestos Trust: Yes
  • Bankruptcy Status: Filed in 1982 and reorganized in 1988

In 1886, another company based in Milwaukee, Wisconsin, the Manville Covering Company, was founded and began manufacturing asbestos heat insulation. In 1901, the two companies merged and formed the H.W. Johns Manville Company. In addition to asbestos roofing and insulation, the company branched out into producing asbestos automotive sheet cylinder packing, asbestos acoustical products and asbestos cement.

In 1927, the company went public as the Johns Manville Corporation and later started producing asbestos products for the U.S. war effort. The government mandated that asbestos products be used to insulate Navy vessels in 1945, and Johns Manville produced a number of insulating products with a mixture of asbestos and silica.

In 1958, Johns Manville branched out into fiberglass. The company moved its headquarters from New York to Denver, Colorado, in 1972, and two years later became one of the leading U.S. manufacturers of PVC pipe, asbestos cement pipe and fiberglass.

However, when thousands of people began developing serious illnesses as a result of asbestos exposure from Johns Manville products and filed lawsuits, the company filed for bankruptcy in 1982. In 1988, the company emerged from bankruptcy and founded the Manville Personal Injury Settlement Trust.

Berkshire Hathaway, Inc., acquired Johns Manville in 2001, and today the company produces insulation and construction products. However, its product line is now made with fiber glass and polyurethane. The company has also won awards for its formaldehyde-free insulation.

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Litigation & Specific Lawsuits

Because of its extensive use of asbestos since Johns Manville was founded, hundreds of thousands of asbestos injury claims and lawsuits have been filed against the company. In fact, as early as 1929 employees filed health claims against the company.

One of the lawsuits filed before the Manville Personal Injury Settlement Trust, which was founded in 1988, was Cavett v. Johns-Manville Sales Corporation. James Cavett worked as a boilermaker for 40 years beginning in 1939. He repaired and built boilers in numerous plants. While working as a boilermaker, he worked around boiler and pipe insulation manufactured by Johns-Manville. Cavett testified that the asbestos dust exposure was so bad that it looked like “someone dumped a barrel of flour on you.” He further testified that 80 to 90 percent of the insulation used was supplied by Johns Manville.

Experts at the trial testified that Cavett suffered from asbestosis and lung cancer caused by exposure to asbestos. After Cavett passed away from asbestos-related lung cancer, his wife Mary was substituted as the plaintiff. The jury awarded her $800,000 for compensatory damages and $1.5 million for punitive damages.

In another court decision, the U.S. Bankruptcy Court for the Southern District of New York issued an order in 2004 for Travelers Insurance to pay $500 million to settle more than 600,000 claims against Johns Manville. Travelers insured Johns Manville from the 1940s through the 1970s while the company manufactured asbestos-containing products.

Consolidated Steel Shipyard

Products manufactured and supplied by Johns-Manville created the large amount of asbestos dust found at the shipyard in Orange, Texas. In 1944, workers from the Asbestos and Magnesia Materials Company, a subcontractor at the Orange shipyard, installed Johns-Manville manufactured asbestos insulation in the Consolidated Steel Shipyard in Orange.

Years later when employees of the Orange shipyard developed asbestos-related diseases and filed lawsuits, Johns-Manville maintained it couldn’t be held liable for the medical conditions caused by its products because the Company was unaware that asbestos caused disease. In fact, Johns-Manville claimed that scientific knowledge and the methods of research that were current at the time were not sophisticated enough to discover the harmfulness of asbestos exposure.

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Industries & Occupations

Johns Manville was one of the first companies to manufacture asbestos-containing products. In fact, it was founded for the purpose of creating asbestos products primarily for insulation and construction materials. The company’s own founder, Henry Ward Johns, died of “dust phthisis pneumonitis” — a disease believed to be asbestosis.

Because of the sheer number of products manufactured by Johns Manville, a number of different people were put at risk of asbestos exposure. In addition to the products produced by Johns Manville, the company also owned a number of mines and exported raw asbestos to other countries. The famous Jeffrey mine in Canada, one of the largest open pit mines in the world, was owned by Johns Manville. Canada closed the mine in 2011.

Occupations at risk from asbestos exposure from Johns Manville products:

  • Asbestos abatement workers
  • Bakers
  • Boiler workers
  • Carpenters
  • Construction workers
  • Drywall installers and tapers
  • Electricians
  • Factory workers
  • Firefighters
  • Furnace worker
  • HVAC Installers and repairers
  • Insulation installer
  • Military veterans
  • Millwrights
  • Miners
  • Painter
  • Pipefitter
  • Roofer
  • Shipyard worker
  • Steel foundry worker
  • Textile worker
  • U.S. Navy veterans

Manville Personal Injury Settlement Trust

Johns Manville was the first asbestos-producing company to file bankruptcy and establish a trust to settle all asbestos injury claims. At the time, it was considered a novel use of the bankruptcy law.

The Manville Personal Injury Settlement Trust was created in 1988 to settle all asbestos-related claims against Johns Manville. It started with an initial amount of $2.5 billion. Since it was created, hundreds of thousands of victims have been compensated.

At the end of 2018, the Manville Personal Injury Settlement Trust held more than $650 million in assets. Since 1990, it has liquidated almost $5 billion in claims.


Some of Johns Manville's asbestos containing products:

  • 352 Insulating Cement
  • 7M-13 Raw Asbestos Fibers
  • Asbestoguard Adhesives
  • Asbestotle Flashing
  • Colorbestos Siding Sheets
  • Corrugated Asbestos Transite Sheets
  • Fibrocel Insulation
  • Flexstone Asbestos Roofs
  • Glasal flexboard
  • Insulkote Weatherproofing
  • J-M Asbestos Flexboard
  • J-M Asbestos Movable Walls
  • J-M Asbestos Wall Board
  • J-M Aviation Products
  • J-M Building Papers and Felts
  • J-M Built Up Roofs
  • J-M Encased Insulating Board
  • J-M Insulating Cement
  • J-M MariniteFireproof Sheet
  • J-M Transite
  • Johns-Manville Caulking Putty
  • Johns-Manville Colorbestos Shingles
  • Johns-Manville Rigid Asbestos Shingles
  • Permastone Asbestos-Cement Flexboard
  • Salem Asnestos Roof Shingles
  • Stonehedge Arcitechtural Panels
  • Terraflex Plastic Asbestos Floor Tile
  • Thermobestos Block Insulation
  • Thermobestos Cement
  • Transitop Asbestos Panels
  • Vitribestos Sheet
  • Vulcabestos Insulation


Some of the types of products manufactured by Johns Manville include:

  • Wallboard
  • Insulation
  • Roofing
  • Siding
  • Cement board
  • Asbestos paper
  • Felt
  • Cloth
  • Gaskets
  • Packing
  • Pipe insulation
  • Floor tiles

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Writer and Editor

Matt Mauney is an award-winning journalist with more than a decade of professional writing and editing experience. He joined The Mesothelioma Center at in 2016, and he spends much of his time reading, analyzing and reporting on mesothelioma research articles to ensure people in the mesothelioma community know the latest medical advances. Prior to joining, Matt was a Community Manager at the Orlando Sentinel. Matt also edits pages, articles and other content on the website. He holds a certificate in health writing from the Centers for Disease Control and Prevention.

Walter Pacheco, Managing Editor at
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6 Cited Article Sources

  2. Manville Personal Injury Settlement Trust. (2005). Retrieved from:
  3. Dixon, L., McGovern, G., & Coombe, A. (2010). Asbestos bankruptcy trusts. Retrieved from:
  4. Johns Manville. (2012). Company History. : Retrieved from:
  5. Cavett v. Johns-Manville Sales Corporation. (November 13, 1985). Retrieved from:
  6. Fundingverse. (n.d.). Johns Manville Corporation history. Retrieved from:

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Last Modified March 4, 2019

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