Bondex (Bondek) Black Mastic Roof Cement
Product Description
Bondex Black Mastic Roof Cement, sometimes identified in records under the alternate spelling “Bondek,” was a heavy-bodied, bituminous-based roofing compound manufactured and distributed by Bondex International, Inc. Products of this type were designed for a range of roofing and waterproofing applications, including sealing seams, patching flat and low-slope roofs, flashing repairs, and adhering roofing felts and membranes. Black mastic roof cements were workhorses of the commercial and industrial construction trades throughout much of the twentieth century, valued for their weather resistance, flexibility, and strong adhesive properties.
Bondex International operated across multiple product categories, including joint compounds, patching products, and specialty coatings, marketing its goods to professional tradespeople and consumers alike through hardware distributors and building supply channels. The Black Mastic Roof Cement product line fell within the company’s broader portfolio of construction materials intended for both new construction and maintenance and repair work on existing structures.
During the decades when asbestos was widely used as a performance-enhancing additive in construction materials — generally spanning from the early to mid-twentieth century through the late 1970s and into the early 1980s — roofing mastics and cements of this type frequently incorporated asbestos fibers as a reinforcing and stabilizing agent. Regulatory changes, including tighter guidance from the Environmental Protection Agency (EPA) and the framework established by the Asbestos Hazard Emergency Response Act (AHERA), ultimately drove manufacturers to reformulate or discontinue asbestos-containing versions of such products.
Asbestos Content
Black mastic roof cements and similar bituminous roofing compounds produced during the asbestos era commonly contained chrysotile (white asbestos) and, in some formulations, amphibole varieties such as amosite or anthophyllite. Asbestos fibers were incorporated into these products because they provided thermal stability, prevented the mastic from becoming too brittle in cold temperatures or too soft in high heat, and improved the overall cohesion and workability of the compound.
Litigation records document that Bondex Black Mastic Roof Cement has been identified as an asbestos-containing product in legal proceedings. Plaintiffs alleged that the product, as manufactured and sold during portions of its production history, contained asbestos fibers at concentrations sufficient to pose a health hazard to individuals who applied, disturbed, or otherwise handled the material during normal and foreseeable use. The specific percentage of asbestos content by weight has varied in litigation testimony and product sampling records, consistent with the range typically documented in roofing mastic products of the era.
Because the product was marketed across both professional and consumer channels, exposure was not limited to any single trade or job classification. The broad availability of the product in hardware and building supply stores meant that both skilled tradespeople and general laborers could encounter it in occupational settings.
How Workers Were Exposed
Industrial workers and construction tradespeople represent the primary population documented as having been exposed to Bondex Black Mastic Roof Cement. The application process for roofing mastic products creates conditions highly conducive to asbestos fiber release. Workers who opened containers, stirred or mixed the compound prior to use, spread it with trowels or brushes, and cleaned up residual material after application could all disturb the product in ways that liberated airborne fibers.
Plaintiffs alleged that workers applying Bondex Black Mastic Roof Cement in enclosed or partially enclosed areas — such as maintenance operations inside industrial facilities, repairs beneath roof decking, or work on HVAC penthouses — faced elevated fiber concentrations due to limited ventilation. Outdoor roofing work, while generally better ventilated, still posed exposure risks when workers applied the product in quantity over large surface areas or worked in proximity to others performing similar tasks.
Beyond direct applicators, litigation records document claims by workers who performed ancillary tasks in areas where the mastic was being used. Helpers, laborers, and supervisory personnel present at job sites during application were identified in complaints as having sustained secondary or bystander exposure. Similarly, workers engaged in the removal or replacement of roofing systems that incorporated asbestos-containing mastic — a common activity in renovation and demolition work — faced potentially intense fiber release as the dried, friable material was disturbed, scraped, or broken apart.
The categories of workers most frequently identified in litigation records as having been exposed include roofers, industrial maintenance workers, building maintenance personnel, sheet metal workers performing flashing work, and general construction laborers assigned to roofing crews. Because Bondex products were widely distributed through retail and wholesale channels, the range of industries and occupational settings in which exposure occurred was broad, encompassing manufacturing plants, warehouses, commercial buildings, and institutional facilities.
OSHA’s permissible exposure limits for asbestos, established and revised across several rulemakings beginning in the 1970s, reflect regulatory recognition that construction and building maintenance work involving asbestos-containing materials represents a significant ongoing exposure risk. Workers who performed roofing tasks prior to the implementation of these standards, or who worked for employers who failed to comply with them, often did so without respiratory protection or hazard communication.
Documented Trust Fund / Legal Options
Bondex Black Mastic Roof Cement falls within the category of products addressed through asbestos personal injury litigation rather than through a dedicated bankruptcy trust fund. Bondex International, Inc. has been named as a defendant in asbestos litigation proceedings. Litigation records document claims brought by plaintiffs who alleged occupational exposure to asbestos-containing Bondex products, including roofing mastics and related compounds, and who subsequently developed asbestos-related diseases including mesothelioma, asbestosis, lung cancer, and other malignancies.
Individuals who were exposed to Bondex Black Mastic Roof Cement and later diagnosed with an asbestos-related illness may have legal options that include:
- Direct litigation against Bondex International or successor entities, based on negligence, failure to warn, product liability, and related theories as alleged in prior proceedings
- Co-defendant claims in cases where multiple asbestos-containing products were encountered at the same worksite or over the course of a career, which is common given the overlapping nature of construction trades and product use
- Evaluation for additional trust fund claims if a claimant’s work history indicates exposure to other asbestos-containing products covered by existing asbestos bankruptcy trusts
Diagnosed individuals or surviving family members seeking to understand their legal options should consult with an attorney experienced in asbestos litigation. Statutes of limitations for asbestos claims vary by state and are typically measured from the date of diagnosis rather than the date of exposure. Preserving work history documentation, medical records, co-worker testimony, and any available product identification records is essential to building a viable claim.
Litigation records document that courts have recognized roofing mastic products as a legitimate category of asbestos exposure, and plaintiffs alleging exposure to Bondex Black Mastic Roof Cement have pursued claims consistent with those brought against other manufacturers of asbestos-containing roofing compounds.