Fibreboard Roofing Felt: Asbestos Exposure and Legal Options

Fibreboard Corporation was a major building materials manufacturer whose product lines spanned several construction and industrial applications, including roofing products. Among the company’s documented output was roofing felt, a foundational component in residential and commercial roofing assemblies. Litigation records document that certain Fibreboard roofing felt products contained asbestos, and plaintiffs alleged that workers who handled, installed, or worked near these materials faced significant health risks as a result of asbestos fiber release.

Product Description

Roofing felt—also commonly referred to as roofing underlayment or tar paper—is a fibrous sheet material applied to roof decking beneath the outermost protective roofing layer, whether shingles, tiles, or metal panels. The material functions as a secondary moisture barrier, provides a degree of thermal buffering, and offers a working surface for installers during construction. Roofing felt has been manufactured using a variety of base materials over the decades, including organic cellulose fibers, fiberglass mats, and, historically, asbestos-containing fiber blends.

Fibreboard Corporation produced roofing felt as part of a broader portfolio of building products that also included floor tile, pipe insulation, and refractory materials. The company’s manufacturing operations extended across much of the twentieth century, during which asbestos was widely regarded as a desirable additive in roofing products because of its fire-resistance, tensile strength, and durability under weather stress. Fibreboard roofing felt was sold and distributed to contractors, construction supply distributors, and industrial buyers across multiple regions of the United States.

Asbestos Content

Asbestos-containing roofing felts were a recognized product category throughout much of the mid-twentieth century. Chrysotile asbestos—the most commercially prevalent fiber type—was commonly incorporated into roofing felts to improve the material’s resistance to heat, flame, and physical degradation. In some formulations, amphibole fiber varieties were also used, though chrysotile predominated in roofing applications.

Litigation records document that Fibreboard’s roofing products, including felt underlayments, were alleged to have contained asbestos as a constituent material. Plaintiffs alleged that the company incorporated asbestos fibers into its roofing felt manufacturing process and that these fibers could be released during routine handling, cutting, and installation activities. While the specific fiber concentrations and formulation histories for individual product runs vary and are largely reconstructed through internal company documents, purchasing records, and expert industrial hygiene testimony introduced in litigation, the presence of asbestos in Fibreboard roofing products more broadly is documented across decades of legal proceedings involving the company.

Fibreboard’s asbestos-related liabilities ultimately became the subject of one of the most consequential mass tort proceedings in United States legal history, reflecting the scale of alleged exposure across its product lines.

How Workers Were Exposed

Industrial workers and construction tradespeople who worked with or around roofing felt during its manufacture, distribution, installation, or removal represent the populations most frequently identified in exposure claims. Litigation records document the following pathways through which occupational exposure was alleged to occur:

Manufacturing workers at facilities producing asbestos-containing roofing felt were potentially exposed to raw asbestos fiber during the blending and sheet-forming stages of production, as well as during trimming, rolling, and packaging operations. These environments could generate sustained airborne fiber concentrations if adequate engineering controls were not in place.

Roofing installers and general construction workers handled roofing felt directly during application. Cutting felt to fit roof geometry—using knives, shears, or other hand tools—plaintiffs alleged, caused asbestos-containing dust to become airborne. Workers who stapled, nailed, or otherwise fastened felt to decking surfaces also disturbed the material in ways that could release fibers.

Demolition and renovation workers encountered existing asbestos-containing roofing felt during tear-off operations. Aged or weathered felt, plaintiffs alleged, was particularly prone to crumbling and fiber release when disturbed. Workers removing old roofing assemblies—sometimes without awareness that the underlying felt contained asbestos—faced exposure without the benefit of respiratory protection.

Industrial workers generally, including those employed at warehouses, distribution centers, and industrial facilities where roofing installation or repair work was performed on large structures, may also have encountered Fibreboard roofing felt. In industrial settings, roofing work was sometimes performed by in-house maintenance staff rather than specialized contractors, meaning that protective protocols common on dedicated job sites were not always observed.

The latency period for asbestos-related diseases—the span of time between initial exposure and clinical diagnosis—typically ranges from ten to fifty years. Mesothelioma, asbestosis, lung cancer, and other asbestos-attributable diseases have been diagnosed in workers exposed decades before their conditions manifested. This latency means that workers exposed to Fibreboard roofing felt during peak production and installation periods in the mid-to-late twentieth century may only now be receiving diagnoses.

Fibreboard Corporation’s asbestos liabilities gave rise to extensive civil litigation beginning in the 1970s and continuing through subsequent decades. The volume and severity of claims against Fibreboard ultimately contributed to the company’s financial restructuring and the establishment of a settlement mechanism intended to address both present and future claimants.

The Fibreboard Asbestos Settlement Trust was established as part of the resolution of Fibreboard’s asbestos-related liabilities. This trust was created to provide compensation to individuals who could demonstrate qualifying asbestos-related disease and a credible exposure history to Fibreboard products, which litigation records confirm included roofing felt among other product categories.

Individuals who believe they were exposed to Fibreboard roofing felt and have received an asbestos-related diagnosis should be aware of several important considerations:

  • Claim eligibility through the Fibreboard trust or through ongoing litigation depends on establishing both a qualifying medical diagnosis and a documented exposure history. Medical records, employment history, co-worker testimony, and product identification evidence may all be relevant to substantiating a claim.

  • Applicable disease categories in asbestos trust submissions typically include mesothelioma, lung cancer with asbestos exposure history, asbestosis, and other asbestos-related pulmonary conditions. The specific disease tier assigned to a claim affects the compensation values applied under trust payment matrices.

  • Statutes of limitations govern how long an individual has to file a legal claim following diagnosis or discovery of an asbestos-related condition. These deadlines vary by state and can be as short as one to three years from the date of diagnosis. Timely consultation with legal counsel is critical.

  • Litigation pathways remain available for claimants whose exposure histories involve multiple manufacturers or product lines. Plaintiffs alleged exposure to Fibreboard roofing felt in the context of broader occupational asbestos exposure cases, and multi-defendant litigation continues to be a viable route for certain claimants.

Workers or surviving family members with potential exposure to Fibreboard roofing felt are encouraged to consult with an attorney experienced in asbestos litigation to evaluate applicable legal remedies and preserve all available options.