W.R. Grace & Co. — Asbestos-Containing Products

Product Description

W.R. Grace & Co. was one of the most significant asbestos-related defendants in American legal history, operating not primarily as a manufacturer of finished goods but as a major miner, processor, and distributor of raw asbestos-containing materials that were incorporated into a wide range of construction and industrial products. Founded in the mid-nineteenth century, Grace grew into a diversified chemical and materials conglomerate with operations spanning multiple industries, including construction products, specialty chemicals, and industrial insulation.

Among Grace’s most consequential product lines were Zonolite attic insulation (a vermiculite-based product), Monokote fireproofing spray, and various joint compounds and pipe insulation materials sold under multiple trade names. The company sourced vermiculite ore from its Libby, Montana mining operation, which was heavily contaminated with naturally occurring tremolite asbestos — a particularly aggressive fiber type associated with mesothelioma and other asbestos-related diseases.

Grace’s Libby mine operated for decades and supplied vermiculite to processing and distribution facilities across the United States. The contaminated vermiculite was used as a component in attic insulation, potting soil products, and various industrial applications. Grace’s construction products division also produced and marketed joint compounds and fireproofing sprays that incorporated chrysotile and other asbestos fiber types as binders, strengtheners, and fire-resistant additives.

The scale of Grace’s asbestos-containing product distribution — combined with the company’s documented internal awareness of contamination hazards — placed it at the center of one of the most complex asbestos bankruptcy proceedings in U.S. history.

Asbestos Content

W.R. Grace’s asbestos exposure liability arose from multiple product streams, each involving different fiber types and delivery mechanisms.

The Libby, Montana vermiculite ore processed by Grace contained tremolite asbestos, an amphibole fiber recognized by regulatory and scientific authorities as highly toxic. Tremolite fibers were present throughout the ore body and could not be separated from the vermiculite through standard processing methods. Products incorporating Libby vermiculite — including Zonolite attic insulation — therefore contained tremolite asbestos as an inherent contaminant.

Grace’s Monokote fireproofing sprays and related construction products were formulated with chrysotile asbestos as a functional ingredient, providing fire resistance and binding properties. These products were applied as spray-applied fireproofing (SFRM) on structural steel in commercial and institutional buildings.

Litigation records document that Grace’s joint compound products and certain pipe insulation materials also incorporated asbestos fiber content during portions of their production run, consistent with industry-wide practices during the mid-twentieth century when asbestos was a standard additive in construction materials. The precise formulations and fiber concentrations varied across product lines and production periods.

How Workers Were Exposed

W.R. Grace’s asbestos-containing products created documented exposure pathways across multiple occupational settings and worker categories.

Mining and processing workers at the Libby, Montana facility faced direct, sustained exposure to tremolite-contaminated vermiculite dust during extraction, milling, and bagging operations. Federal investigations conducted by the Environmental Protection Agency and the Agency for Toxic Substances and Disease Registry documented elevated rates of asbestos-related disease among Libby workers and community members — a situation that drew national attention and resulted in one of the most significant environmental enforcement actions in EPA history.

Construction and insulation workers were exposed through the application of Monokote spray fireproofing on building projects. Plaintiffs alleged that the spray application process generated substantial airborne asbestos fiber concentrations in enclosed spaces, creating inhalation hazards for applicators, ironworkers, and other tradespeople working in proximity to fireproofing operations.

Drywall finishers, plasterers, and general laborers who mixed, applied, or sanded Grace joint compound products were exposed to asbestos-laden dust during normal work activities. Sanding operations in particular are recognized under OSHA standards and AHERA documentation as generating fine, respirable asbestos particles that remain airborne for extended periods.

Homeowners and general contractors who installed Zonolite attic insulation — or who disturbed existing Zonolite installations during renovation, electrical work, or HVAC servicing — faced exposure to tremolite-contaminated dust in residential settings. The EPA has identified undisturbed Zonolite attic insulation as a potential source of tremolite fiber release during any activity that agitates the material.

Pipe insulation applicators and maintenance workers in industrial and commercial facilities encountered asbestos-containing pipe covering and insulating materials associated with Grace’s product lines, with exposure occurring during both initial installation and subsequent repair or removal activities.

Litigation records document that internal Grace communications indicated company awareness of asbestos contamination risks at the Libby operation and in certain product lines significantly before public disclosure or regulatory action.

Documented Trust Fund / Legal Options

W.R. Grace filed for Chapter 11 bankruptcy protection in April 2001, citing overwhelming asbestos liability from decades of litigation. After years of complex proceedings involving multiple creditor committees — including personal injury claimants, property damage claimants, and Libby-specific claimants — Grace’s reorganization plan was confirmed and the company emerged from bankruptcy in 2014.

As part of the reorganization, Grace established the WRG Asbestos PI Trust to resolve personal injury claims, and the WRG Asbestos PD Trust to address property damage claims arising from asbestos-containing products in buildings.

The WRG Asbestos PI Trust accepts claims from individuals diagnosed with qualifying asbestos-related diseases, including mesothelioma, lung cancer, and asbestosis, who can demonstrate exposure to Grace asbestos-containing products. The trust operates under a Trust Distribution Procedure (TDP) that establishes claim categories, medical and exposure criteria, and payment schedules. Claimants diagnosed with mesothelioma typically fall into the highest claim category under the TDP framework.

The WRG Asbestos PD Trust addresses claims from building owners and property managers who can document the presence of Grace asbestos-containing products — particularly Monokote fireproofing — in their structures and have incurred costs related to inspection, abatement, or remediation.

Individuals with exposure to Libby vermiculite products, including Zonolite attic insulation, may have additional legal options through the Libby-specific claims process, as the EPA’s Libby Superfund designation created distinct legal and regulatory frameworks for this exposure population.

Plaintiffs alleged in pre-bankruptcy litigation that Grace suppressed or delayed disclosure of known contamination hazards, which informed both the structure of the trust and the scope of property damage claims. Litigation records document that Grace faced claims from across the United States related to its full range of asbestos-containing product lines.

Individuals who believe they were exposed to W.R. Grace asbestos-containing products should consult with an attorney experienced in asbestos trust fund claims and mesothelioma litigation to evaluate eligibility under the WRG PI Trust TDP and any applicable state law claims.