Product Description

Bondex All Purpose Joint Cement, SX Joint Cement, SX Topping Cement, and Bondex Ready-Mixed Joint Cement were a family of drywall finishing products manufactured and sold under the Bondex brand name from approximately 1961 through 1977. These products were formulated for use in the finishing and taping stages of interior drywall installation, serving as the bonding and smoothing compounds applied over wallboard seams, nail heads, corner beads, and other surface imperfections before final painting or decoration.

Joint compounds of this era were workhorses of the construction industry. Bondex’s product line was marketed to professional tradespeople and general contractors performing residential, commercial, and industrial construction. The ready-mixed formulations were especially convenient, arriving in pre-blended form that required little preparation before application. The topping and all-purpose variants addressed different stages of the multi-coat drywall finishing process, from initial tape embedding through final skim coats intended to produce a smooth, paint-ready wall surface.

Bondex products were distributed broadly across the United States during the period of manufacture. Their presence on construction job sites — spanning new home developments, commercial office buildings, industrial facilities, and institutional construction — was widespread. The brand name was sufficiently recognized that Bondex joint compounds appeared in trade catalogs and building supply inventories throughout the 1960s and into the mid-1970s.

Asbestos Content

Bondex All Purpose Joint Cement and the related SX and Ready-Mixed formulations contained chrysotile asbestos as an ingredient during their production years of 1961 through 1977. Chrysotile, a member of the serpentine mineral group, was the dominant form of asbestos used commercially in the United States during this period and was incorporated into joint compounds for its functional properties.

In drywall finishing applications, chrysotile asbestos contributed to the workability and performance characteristics of the compound. The fibrous mineral structure helped bind the mixture, improved the product’s resistance to cracking as it dried and cured, and added tensile reinforcement to the hardened film. These properties made asbestos an attractive additive for manufacturers competing in a demanding construction materials market.

The presence of chrysotile in joint compound formulations was not unique to Bondex. Numerous manufacturers incorporated asbestos into similar products during this era. However, the specific inclusion of chrysotile in Bondex’s product line has been documented through litigation and product testing, establishing that workers who used these products were potentially exposed to asbestos fibers released during normal application activities.

How Workers Were Exposed

Exposure to asbestos from Bondex joint cement products occurred primarily through the dust generated during the handling, mixing, application, and finishing of the compounds. Industrial workers and construction tradespeople who worked with or near these products faced multiple pathways of potential fiber release.

Dry mixing activities created significant dust clouds. When workers combined powdered joint compound formulations with water, or when dry product was poured from bags and containers, airborne asbestos fibers could be released into the breathing zone of the worker performing the task and those nearby.

Sanding was among the most hazardous activities associated with joint compound use. After compound dried between coats, workers sanded the hardened material to achieve smooth, uniform surfaces. Dry sanding of asbestos-containing joint compound is well-documented as generating substantial quantities of fine respirable dust, including asbestos fibers, that could remain suspended in the air for extended periods. Workers performing this task without adequate respiratory protection could inhale significant quantities of fiber.

Application activities — spreading compound with taping knives, feathering edges, and skimming coats — also generated dust and could release fibers, particularly in enclosed or poorly ventilated spaces where airborne particles could accumulate. Workers who were present on job sites where joint compound was being sanded or applied, even if not directly performing those tasks, could experience bystander exposure.

Industrial workers in manufacturing facilities where these products were produced faced a separate occupational exposure profile, potentially encountering raw chrysotile fiber and compound ingredients prior to formulation and packaging.

The cumulative exposure experienced by professional drywall finishers, tapers, and construction workers who used Bondex products across multiple projects over working careers represented a significant concern. Asbestos-related diseases, including mesothelioma, lung cancer, asbestosis, and pleural disease, are associated with repeated or prolonged inhalation of asbestos fibers, and the latency period for these diseases can span decades from initial exposure.

Documented Product Identification

The following details are drawn from public asbestos litigation records, manufacturer catalog pages, technical manuals, and corporate history materials. Each item reflects the product as documented in those sources.

Documented asbestos-use period: 1961-1981

Corporate context: Also known as Reardon, RPM, and Republic Powdered Metals. Warning labels were added to packaging in 1972 or 1973.

Brand identification: Products sold under multiple brand names including Bondex, Reardon’s, Trax, Montgomery Ward, Penncraft, Hi & Dri, NPD, Cook’s Lifeline, Brod Dirgan, F.O. Pierce, and Metro

Documented asbestos components: chrysotile.

Industries served: residential construction, commercial construction, mobile home manufacturing, drywall installation.

Documented product lines:

  • Dramex Interior Finish (1961-1977). Interior texture paint containing 7.3% chrysotile asbestos. — asbestos components: chrysotile.
  • Dramax Exterior Finish (1961-1977). Exterior paint containing 7.2% chrysotile asbestos. — asbestos components: chrysotile.
  • Water Putty (1961-1977). Interior patching compound containing 6.5% chrysotile asbestos. — asbestos components: chrysotile.
  • Handy Patch All Purpose Patcher (1961-1977). Interior patching compound containing 7.5% chrysotile asbestos. — asbestos components: chrysotile.
  • SX Joint Cement (1961-1977). Drywall joint treatment material containing 14.8% chrysotile asbestos. — asbestos components: chrysotile.
  • All Purpose Joint Cement (1961-1977). Drywall joint treatment material containing 5% chrysotile asbestos. — asbestos components: chrysotile.
  • Ready-Mixed Joint Cement (1961-1977). Drywall joint treatment material containing 3.8% chrysotile asbestos. — asbestos components: chrysotile.
  • Block Filler & Primer (1961-1977). Cite block filler and primer containing 9.1% chrysotile asbestos. — asbestos components: chrysotile.

All Bondex asbestos-containing products used chrysotile asbestos. Products were sold under numerous private label and store brand names through retailers including Montgomery Ward. Sanding of dried joint compounds was a documented application method.