Quigley Insulag Refractory Cement

Product Description

Quigley Insulag Refractory Cement was a high-temperature refractory product manufactured by Quigley Company, Inc., a New York-based industrial materials manufacturer that operated throughout much of the twentieth century. Insulag was formulated and marketed as a castable or trowelable cement capable of withstanding the extreme thermal conditions found in industrial furnaces, kilns, boilers, and related high-heat equipment. Products in the Insulag line were designed to be applied as a protective lining or patching compound on surfaces exposed to sustained elevated temperatures, making them a practical choice for maintenance and construction in heavy industry.

Quigley Company built a substantial commercial presence supplying refractory materials to industries that relied on heat-intensive processes, including steelmaking, glass manufacturing, chemical processing, petroleum refining, and power generation. Insulag cement was among the company’s product offerings intended to provide thermal insulation and structural integrity in environments where conventional construction materials would fail. The product was typically sold in bags and mixed on-site, then applied by hand or with tools to furnace walls, boiler interiors, pipe joints, and other surfaces requiring heat resistance.

As with many refractory and insulating cements of its era, Insulag Refractory Cement has been the subject of civil litigation alleging that its formulation contained asbestos, a mineral prized at the time for its thermal stability and durability but later recognized as a serious occupational health hazard.


Asbestos Content

Litigation records document that plaintiffs alleged Quigley Insulag Refractory Cement contained asbestos as a functional component of its formulation. Refractory cements of this type were commonly manufactured with chrysotile or other asbestos fiber varieties during the mid-twentieth century, as asbestos was widely understood within the industry to enhance thermal resistance, improve binding properties, and increase the structural durability of high-heat materials.

Plaintiffs alleged that Insulag, as formulated and sold during the relevant period, incorporated asbestos fibers in quantities sufficient to pose an inhalation risk during normal handling and application. The specific fiber types and percentage compositions alleged in individual cases have varied across the litigation record, but the general claim—that the cement released respirable asbestos fibers when mixed, applied, or disturbed—has appeared consistently in complaints filed against Quigley Company and its successors.

Quigley Company itself became the subject of extensive asbestos-related litigation, which ultimately contributed to proceedings affecting the company’s corporate structure. The volume and nature of claims filed against Quigley reflect the widespread industrial use of its refractory product line over several decades.


How Workers Were Exposed

Industrial workers across a range of trades and settings alleged occupational exposure to asbestos through direct and secondary contact with Quigley Insulag Refractory Cement. Because the product was used in heavy industrial environments where it was routinely mixed, shaped, troweled, and applied, workers involved in those tasks faced the most direct potential for fiber release.

Mixing and application: Litigation records document that workers who opened bags of dry Insulag cement and mixed it with water or other compounds could disturb settled asbestos fibers, releasing them into the immediate breathing zone. Applying the mixed cement to hot surfaces by trowel, brush, or by hand was similarly identified as a task capable of generating airborne particulate.

Furnace and boiler maintenance: Workers performing maintenance on industrial furnaces, boilers, and kilns frequently encountered refractory cement in a hardened state. Chipping, grinding, cutting, or otherwise removing old or damaged refractory lining—including material alleged to be Insulag—could release previously bound asbestos fibers in concentrated form. Plaintiffs alleged that this demolition and repair work created particularly hazardous dust conditions.

Pipe and joint insulation work: Given Insulag’s documented use as a pipe insulation cement, workers involved in installing or maintaining insulated pipe systems in industrial plants were also identified in litigation as a potentially exposed population. Fitting cement around pipe joints, covering insulated runs, or removing deteriorated pipe insulation cement could involve disturbing asbestos-containing material.

Bystander and co-worker exposure: Litigation records further document claims by workers who alleged exposure not from direct handling of Insulag, but from working in proximity to others who were applying or removing the product. In enclosed industrial spaces such as boiler rooms, furnace areas, and equipment rooms with limited ventilation, airborne fibers released by one worker’s activities could remain suspended and be inhaled by others nearby.

The general category of “industrial workers” encompasses a broad population in Insulag-related claims, including boilermakers, pipefitters, ironworkers, furnace operators, millwrights, insulators, and general maintenance personnel employed at facilities where Quigley refractory products were regularly used.


Quigley Insulag Refractory Cement falls into the category of Tier 2 — Litigated Products, meaning that compensation for asbestos exposure linked to this product is pursued through the civil court system rather than through a pre-established asbestos bankruptcy trust fund.

Quigley Company’s asbestos liability history has been extensive, and litigation records document that plaintiffs have filed claims in multiple jurisdictions alleging personal injury—including mesothelioma, lung cancer, asbestosis, and pleural disease—arising from exposure to Quigley products including Insulag. Claims of this nature are typically brought under theories of negligence, strict products liability, and failure to warn, with plaintiffs alleging that Quigley Company knew or should have known of the hazards associated with asbestos-containing refractory materials and failed to adequately warn workers or provide protective measures.

Individuals who believe they have been harmed by exposure to Quigley Insulag Refractory Cement should consider the following steps:

  • Consult an asbestos litigation attorney experienced in industrial exposure cases. Many firms that handle mesothelioma and asbestos disease claims offer free initial consultations and work on a contingency fee basis.
  • Document occupational history as thoroughly as possible, including the names of employers, job sites, specific tasks performed, and any co-workers or supervisors who may be able to corroborate product use.
  • Preserve medical records documenting any diagnosis of an asbestos-related disease, including pathology reports, imaging studies, and treating physician notes.
  • Identify any additional exposure sources, as many industrial workers were exposed to asbestos from multiple products and manufacturers, which can affect the structure of a legal claim and the defendants named.

Statutes of limitations vary by state and typically begin to run from the date of diagnosis or the date a plaintiff knew or reasonably should have known of the connection between their illness and asbestos exposure. Prompt legal consultation is advisable to preserve claim rights.

This article is provided for informational purposes only and does not constitute legal advice. Individuals with potential asbestos-related claims should seek guidance from a qualified attorney.