Audicote Acoustical Plaster

Manufacturer: United States Gypsum Company (USG) Product Categories: Acoustical Plaster / Ceiling Applications, Joint Compound, Pipe Insulation Legal Status: Tier 2 — Litigated Product

Product Description

Audicote Acoustical Plaster was a spray-applied and trowel-applied acoustic finishing product manufactured by United States Gypsum Company (USG), one of the dominant building materials suppliers in the United States throughout much of the twentieth century. The product was designed for use in commercial, industrial, and institutional settings where sound absorption and noise control were construction priorities. Applied to ceilings and upper wall surfaces, Audicote created a textured, porous finish that dampened sound reverberation in large interior spaces such as offices, schools, hospitals, factories, and auditoriums.

As an acoustical plaster, Audicote was positioned within a broader category of specialty finish products that combined functional acoustic performance with an aesthetically uniform ceiling surface. Unlike modular ceiling tiles, spray or trowel-applied acoustical plasters were applied in place, bonding directly to concrete, gypsum board, metal lath, or other substrate materials. This method of application made Audicote a common specification in mid-century commercial construction projects, where seamless and durable ceiling finishes were preferred over gridded tile systems.

USG marketed Audicote under its well-established product portfolio, which spanned wallboard, plaster, cement, and finishing compounds. The company’s distribution network and national presence meant that Audicote reached construction sites across the country during the decades in which asbestos-containing building products were standard industry practice.

Asbestos Content

Litigation records document that Audicote Acoustical Plaster contained asbestos as a component of its formulation during at least a portion of its production history. Plaintiffs in asbestos personal injury cases alleged that USG incorporated asbestos fibers — most commonly chrysotile, and in some formulations amphibole varieties — into Audicote to enhance the product’s structural integrity, fire resistance, and acoustic performance characteristics.

Asbestos was widely used in plaster and finishing products during the mid-twentieth century precisely because its fibrous composition contributed to the binding strength of applied coatings, improved resistance to cracking, and provided meaningful fire-retardant properties. In acoustical applications specifically, the porous, fibrous matrix of asbestos-containing plaster also contributed to the sound-dampening characteristics that were central to the product’s commercial purpose.

Plaintiffs alleged that USG was aware of the health hazards associated with asbestos-containing products during the period in which Audicote was manufactured and sold, and that adequate warnings were not provided to workers or end users. Litigation records document that this claim was central to personal injury and wrongful death suits filed against USG and co-defendants in asbestos litigation proceedings across multiple jurisdictions.

It should be noted that product reformulations and the eventual phase-out of asbestos in building materials — accelerated by EPA and OSHA regulatory actions beginning in the 1970s — means that not all versions or production runs of Audicote necessarily contained asbestos. Individuals seeking to determine whether a specific application contains asbestos-bearing material should consult a licensed asbestos inspector and pursue bulk sample testing in accordance with AHERA protocols.

How Workers Were Exposed

Industrial workers and construction tradespeople faced documented exposure risks associated with Audicote Acoustical Plaster at multiple stages of the product’s lifecycle, from initial application through subsequent renovation and demolition activities.

During Application: Workers involved in mixing, spraying, or troweling Audicote onto ceiling and wall surfaces were at risk of inhaling airborne asbestos fibers released during product preparation and application. Spray application in particular generated fine aerosols in which asbestos fibers could remain suspended in workplace air for extended periods. Enclosed interior environments — common in commercial construction — limited natural ventilation and concentrated fiber levels in the breathing zones of workers.

During Finishing and Sanding: After initial application, acoustical plaster surfaces required sanding, buffing, or other mechanical finishing work to achieve the specified surface texture. Litigation records document that dry sanding or grinding of set plaster generated respirable dust containing asbestos fibers, exposing finishing workers, plasterers, and nearby tradespeople working in the same area.

During Renovation and Demolition: Existing Audicote applications that remained in buildings presented ongoing exposure risks to workers performing renovation, remodeling, or demolition work decades after original installation. Cutting, chipping, or mechanically removing hardened acoustical plaster disturbed the asbestos-containing matrix and released fibers into the air. Plaintiffs in litigation alleged that workers engaged in these activities — often without knowledge that the plaster contained asbestos — sustained significant exposures as a result.

Bystander and General Industrial Exposure: Industrial workers in facilities where Audicote had been applied, or where renovation work was being conducted nearby, could also sustain bystander exposure. Litigation records document claims from workers who alleged exposure not through direct product handling, but through proximity to installation or disturbance activities occurring in shared workspaces.

OSHA’s permissible exposure limit (PEL) for asbestos, established and subsequently revised downward over time, reflects the regulatory recognition that even low-level asbestos fiber inhalation carries meaningful risk of serious disease, including mesothelioma, asbestosis, and lung cancer.

Because United States Gypsum Company has remained a solvent, operating corporation, asbestos claims involving Audicote Acoustical Plaster have been pursued through direct litigation against USG rather than through a pre-established bankruptcy trust fund. There is no USG asbestos bankruptcy trust associated with this product at the time of this writing.

Direct Litigation Against USG: Litigation records document that USG has been named as a defendant in asbestos personal injury and wrongful death actions brought by plaintiffs who alleged exposure to Audicote and other USG asbestos-containing products. Plaintiffs alleged claims including negligence, failure to warn, strict product liability, and in some cases fraud based on alleged concealment of known health hazards. Cases have been filed in state and federal courts across multiple jurisdictions.

Co-Defendant and Multi-Party Claims: In many asbestos personal injury cases, plaintiffs alleged exposure to products from numerous manufacturers at the same worksite or during the same employment period. Claims involving Audicote have frequently been filed alongside claims against other building product manufacturers, installers, and premises owners, reflecting the reality that construction workers were typically exposed to asbestos from multiple product sources simultaneously.

Trust Fund Claims from Co-Defendants: While USG itself does not operate an asbestos bankruptcy trust, other defendants in the same cases — including manufacturers of complementary building materials, pipe insulation, or joint compound products used alongside Audicote — may have established asbestos bankruptcy trusts through which separate claims can be filed. An experienced asbestos attorney can evaluate whether additional trust fund recoveries are available based on full occupational history.

Consulting an Attorney: Individuals who believe they have sustained asbestos-related disease from exposure to Audicote Acoustical Plaster or other USG products should consult a qualified asbestos litigation attorney. Statutes of limitations vary by state and begin running from the date of diagnosis or, in some jurisdictions, from the date a plaintiff knew or reasonably should have known of the connection between their illness and asbestos exposure. Prompt legal consultation is important to preserving available remedies.

This article is provided for informational reference purposes only and does not constitute legal advice. Product histories are documented based on litigation records and publicly available regulatory materials. For medical concerns, consult a qualified physician; for legal concerns, consult a licensed attorney experienced in asbestos litigation.