Narcocrete Trowel

Product Description

The Narcocrete Trowel was a specialty construction and industrial product manufactured by Keene Corporation, a company that produced a broad range of building materials, insulation products, and industrial compounds throughout much of the twentieth century. The product name suggests a trowel-applied material—likely a cementitious or refractory compound designed to be spread, shaped, or finished by hand or mechanical tools in industrial settings. Products of this type were commonly used in applications requiring thermal protection, surface hardening, or fire resistance across a range of heavy industrial environments.

Keene Corporation operated across multiple product lines during its active years, including floor tiles, pipe insulation, refractory materials, spray-applied fireproofing compounds, and valve and steam trap insulation. The Narcocrete Trowel product appears to intersect with several of these categories, suggesting it may have served multiple end-use applications depending on the job site requirements. Trowel-applied industrial compounds of this era were workhorses of construction and maintenance, prized for their versatility and ease of application in areas where pre-formed insulation or tile materials were impractical.

As with many mid-twentieth century industrial products manufactured by companies operating in these sectors, the Narcocrete Trowel has become the subject of asbestos-related litigation, with plaintiffs alleging that the product contained asbestos-bearing ingredients and that exposure to those ingredients caused serious and potentially fatal respiratory disease.

Asbestos Content

The specific asbestos content of the Narcocrete Trowel by percentage or fiber type is not established in publicly available documentation reviewed for this article. However, litigation records document that plaintiffs alleged the product contained asbestos as a functional ingredient. This allegation is consistent with the broader manufacturing practices of the era and with Keene Corporation’s documented history in asbestos-containing product lines.

Trowel-applied refractory and insulating compounds of the mid-twentieth century routinely incorporated asbestos fibers—most commonly chrysotile, amosite, or a combination of both—because of the material’s heat resistance, tensile reinforcement, and binding qualities. In cementitious or refractory formulations, asbestos fibers served to prevent cracking under thermal stress, extend the workable life of the compound, and improve adhesion to metal or masonry substrates. Products applied near steam lines, boiler systems, kilns, or high-temperature process equipment were especially likely to rely on asbestos for these functional properties.

Given the Narcocrete Trowel’s association with pipe insulation, refractory, spray fireproofing, and steam trap applications, the presence of asbestos in its formulation would have been technically consistent with industry standards of the time.

How Workers Were Exposed

Industrial workers who mixed, applied, shaped, or finished trowel-grade compounds like the Narcocrete Trowel faced potentially significant asbestos exposure through multiple pathways. The exposure risk was present at several stages of the work process.

Mixing and preparation: If the product was supplied in dry or semi-dry form requiring on-site mixing with water or binders, workers who opened bags, poured powder, or mixed batches by hand or with mechanical equipment would have disturbed asbestos-containing dust directly. Bag-emptying alone was recognized by later industrial hygiene research as one of the highest-exposure tasks associated with powdered asbestos products.

Trowel application: Workers who spread, shaped, or built up the compound on pipes, vessel surfaces, floors, or structural members using trowels, floats, or similar tools would have handled the wet or semi-set material in close proximity. Even in wet form, asbestos-containing compounds could release fibers at application edges or when the material was worked vigorously.

Surface finishing and trimming: After initial application, trowel-applied products were frequently shaped, cut, or feathered to fit irregular surfaces or achieve a smooth finish. These mechanical actions—scraping, cutting, smoothing—could release dry or partially dried asbestos fibers directly into the breathing zone of the worker performing the task and those working nearby.

Maintenance, repair, and removal: Industrial facilities required ongoing maintenance of insulated pipe systems, refractory linings, and fireproofed structural members. Workers called on to chip out, remove, or replace deteriorated trowel-applied compounds were exposed to aged, friable material that released fibers readily when disturbed. Maintenance trades—pipefitters, boilermakers, insulators, and millwrights—frequently worked in confined spaces where fiber concentrations could accumulate without adequate ventilation.

Bystander exposure: In industrial plant environments, workers in adjacent trades who were not directly handling the Narcocrete Trowel product may also have experienced secondary exposure simply by working in shared spaces where application or removal was ongoing. Litigation records document that plaintiffs in asbestos cases have frequently included workers whose primary role was adjacent to, rather than directly involved in, the application or disturbance of such compounds.

The diseases most commonly alleged in asbestos litigation involving trowel-applied industrial products include mesothelioma, lung cancer, asbestosis, and pleural disease. These conditions typically manifest decades after the initial exposure, meaning workers employed in industrial settings during the mid-twentieth century may only now be receiving diagnoses connected to products encountered earlier in their careers.

Documented Trust Fund / Legal Options

The Narcocrete Trowel is classified as a Tier 2 product for legal purposes, meaning that claims associated with this product proceed through the civil litigation system rather than through an established asbestos bankruptcy trust fund. No dedicated trust fund has been identified in connection with this specific product or its manufacturer, Keene Corporation, under the documentation reviewed for this article.

Litigation records document that plaintiffs have alleged asbestos-related injury in connection with Keene Corporation products across multiple product categories, including those that overlap with the Narcocrete Trowel’s documented applications. Plaintiffs in these cases alleged that Keene Corporation manufactured, sold, or distributed asbestos-containing materials without adequate warning to workers about the health hazards of asbestos exposure.

Individuals who believe they were exposed to the Narcocrete Trowel or similar Keene Corporation products and who have since been diagnosed with an asbestos-related disease should consult with a qualified asbestos litigation attorney. Important considerations for potential claimants include:

• Statute of limitations: Each state sets its own filing deadlines for asbestos personal injury claims, typically measured from the date of diagnosis rather than the date of exposure. These deadlines vary and can affect eligibility to file.
• Documentation of exposure: Litigation typically requires evidence connecting the plaintiff to the specific product, employer, and job site. Employment records, co-worker testimony, and union records can all support exposure claims.
• Medical documentation: A confirmed diagnosis of mesothelioma, lung cancer, asbestosis, or related pleural disease from a qualified physician is generally required to pursue an asbestos personal injury claim.
• Manufacturer liability: Litigation records document that claims against product manufacturers may include theories of negligence, failure to warn, and strict product liability depending on the jurisdiction and the facts of the case.

Workers in industrial trades who handled trowel-applied refractory, insulating, or fireproofing compounds during the mid-to-late twentieth century should discuss their occupational history with both a physician and an attorney experienced in asbestos litigation.