Staz-on Insulating Cement

Product Description

Staz-on Insulating Cement was a refractory insulating cement manufactured by NARCO — the North American Refractories Company — during the 1960s and 1970s. NARCO was a major producer of refractory products, supplying industrial facilities across the United States with materials engineered to withstand extreme temperatures in furnaces, kilns, boilers, and other high-heat applications.

Insulating cements of this type served a critical function in heavy industrial environments. They were applied as a trowelable or castable material to form insulating linings, seal joints, patch damaged refractory surfaces, and create thermal barriers around heat-generating equipment. Staz-on Insulating Cement was marketed and sold to facilities that demanded durable, heat-resistant materials capable of maintaining structural and insulating integrity under sustained thermal stress.

NARCO supplied refractory products to a wide range of industries during this period, including steel manufacturing, chemical processing, power generation, and other industrial sectors where high-temperature processes were central to operations. Staz-on Insulating Cement was part of that broader product line and was used at industrial sites throughout the country during the decades it was produced.

Asbestos Content

Staz-on Insulating Cement contained chrysotile asbestos as a component of its formulation. Chrysotile, sometimes referred to as white asbestos, is a fibrous silicate mineral that was widely incorporated into refractory and insulating products during the mid-twentieth century because of its heat resistance, tensile strength, and binding properties. In insulating cements, asbestos fibers helped reinforce the material, improved its resistance to thermal shock, and contributed to the product’s ability to remain intact under repeated cycles of heating and cooling.

Chrysotile was the most commonly used asbestos fiber type in commercial and industrial products throughout this era. Although it was once distinguished from amphibole asbestos varieties in terms of perceived hazard, chrysotile is classified by the International Agency for Research on Cancer (IARC) as a Group 1 carcinogen. Regulatory agencies including the U.S. Environmental Protection Agency (EPA) and the Occupational Safety and Health Administration (OSHA) recognize that no safe level of asbestos exposure has been established, regardless of fiber type.

The asbestos fibers contained within Staz-on Insulating Cement were most hazardous when the product was disturbed — during mixing, application, cutting, drying, or removal — conditions that are inherent to the normal use of insulating cements in industrial settings.

How Workers Were Exposed

Industrial workers who handled, applied, or worked in proximity to Staz-on Insulating Cement during the 1960s and 1970s faced potential exposure to airborne chrysotile asbestos fibers. The nature of refractory insulating cement work meant that exposure opportunities were frequent and, in many cases, prolonged.

Mixing dry insulating cement was among the most hazardous tasks. Workers who opened bags of cement powder and combined the material with water in preparation for application could release substantial quantities of airborne dust, including asbestos fibers, into the immediate work area. Depending on workspace ventilation — often limited in furnace rooms, boiler houses, and enclosed industrial areas — those fibers could remain suspended in the air for extended periods.

Application of the cement by trowel, brush, or by hand to furnace walls, kiln linings, boiler surfaces, and refractory joints also generated exposure opportunities. Workers applying the material directly, as well as tradespeople and laborers working nearby, could inhale fibers released during these operations.

Removal and repair work presented additional hazard. When existing refractory linings containing Staz-on or similar insulating cements required replacement or patching, workers had to break out, chip, or scrape away old material. These demolition-type activities could release high concentrations of respirable asbestos fibers from previously applied, dried, or aged cement. The friable nature of older refractory insulation made disturbance during maintenance work particularly hazardous.

Industrial workers generally — including refractory installers, maintenance workers, boilermakers, pipefitters, and laborers assigned to furnace and kiln areas — were the primary occupational groups at risk. Workers at steel mills, foundries, chemical plants, glass manufacturing facilities, and power stations were among those who may have encountered Staz-on Insulating Cement during normal job duties.

OSHA’s current permissible exposure limit (PEL) for asbestos is 0.1 fibers per cubic centimeter of air, averaged over an eight-hour workday. Industrial hygiene standards and exposure controls of this level were not consistently in place during the 1960s and 1970s, meaning workers of that era often performed asbestos-containing cement work without adequate respiratory protection, engineering controls, or awareness of the health risks involved.

Asbestos-related diseases — including mesothelioma, asbestosis, and asbestos-related lung cancer — typically have latency periods of 20 to 50 years between initial exposure and clinical diagnosis. Workers exposed to Staz-on Insulating Cement during this era may only now be receiving diagnoses connected to those past occupational exposures.

Documented Trust Fund / Legal Options

There is no dedicated asbestos bankruptcy trust fund established specifically for claims arising from NARCO-manufactured products such as Staz-on Insulating Cement. Unlike some asbestos manufacturers that underwent Chapter 11 bankruptcy proceedings and established Section 524(g) trusts to address asbestos liabilities, claims related to Staz-on Insulating Cement have been pursued through civil litigation in the tort system.

Litigation records document claims filed by industrial workers and their families against manufacturers and distributors of asbestos-containing refractory products, including insulating cements used in high-temperature industrial applications. Plaintiffs alleged that manufacturers knew or should have known about the hazards associated with asbestos-containing products and failed to adequately warn workers of those risks.

Plaintiffs alleged that exposure to chrysotile asbestos in products such as Staz-on Insulating Cement caused serious and fatal diseases, including malignant mesothelioma, lung cancer, and asbestosis. Litigation records document claims brought by refractory workers, maintenance personnel, and other industrial workers who handled or worked near asbestos-containing insulating cements over the course of their careers.

Individuals diagnosed with mesothelioma or other asbestos-related diseases who have a documented work history involving Staz-on Insulating Cement or similar NARCO refractory products should consult with an asbestos litigation attorney experienced in occupational disease claims. Attorneys handling these cases can evaluate employment records, product identification evidence, and medical documentation to assess potential civil claims against responsible parties.

Because refractory work frequently involved products from multiple manufacturers used side by side on the same job sites, claims may involve more than one defendant and may also implicate asbestos trust funds established by other product manufacturers whose materials were present at the same facilities. A thorough exposure history review is essential to identifying all potential legal avenues available to affected workers and their families.