Fibreboard Rolled Roofing

Product Description

Rolled roofing was a widely used low-slope and flat-roof covering material manufactured in sheet form and supplied in rolls, typically 36 inches wide and covering approximately 100 square feet per roll. Unlike individual shingles, rolled roofing was applied in overlapping horizontal courses directly across a roof deck, making it a practical and economical solution for outbuildings, industrial facilities, commercial structures, and residential additions throughout much of the twentieth century.

Fibreboard Corporation, which operated under various corporate identities during its history, was among the manufacturers that produced rolled roofing products during periods when asbestos was a standard component of roofing materials. The company had a broad manufacturing portfolio that spanned multiple building product categories, including flooring, pipe insulation, refractory materials, and roofing products. Rolled roofing represented one segment of that broader construction materials business.

Rolled roofing products of this era were typically constructed from a felt or mat substrate saturated with asphalt compounds and surfaced with mineral granules. The felt substrate in many products of this type was composed of or reinforced with asbestos fibers, which were valued for their resistance to heat, fire, and moisture degradation. The combination of asphalt and asbestos created a durable, weather-resistant sheet material that was considered highly suitable for low-pitch applications where water pooling was a concern.

Fibreboard’s corporate history is significant in the context of asbestos litigation. The company was eventually absorbed through a series of transactions that resulted in substantial legal exposure related to its historical asbestos-containing product lines. That exposure ultimately drove significant litigation activity and shaped the legal landscape for former workers and others who alleged injury from contact with Fibreboard products.

Asbestos Content

Rolled roofing products manufactured during the mid-twentieth century commonly incorporated chrysotile asbestos fibers into the felt or mat layer that formed the structural core of the sheet. Asbestos fibers were integrated during the manufacturing process, typically through wet-lay or dry-lay felting methods in which fibers were blended with organic materials and then saturated with hot asphalt.

In Fibreboard’s product lines, litigation records document that plaintiffs alleged the company’s roofing and related building materials contained asbestos as a functional component of the base mat or reinforcing layer. The asbestos content in roofing felts of this general class could vary by product specification and intended application, but chrysotile was the predominant fiber type used across the industry for this category of goods.

The mineral granule surface applied over the asphalt coating served to protect the underlying asbestos-containing layers from direct weathering and ultraviolet degradation. However, that surface layer did not encapsulate the substrate completely, and the underlying felt could become friable over time, particularly under mechanical stress, temperature cycling, or during installation and repair activities.

Federal regulatory frameworks, including standards developed under the Asbestos Hazard Emergency Response Act (AHERA) and OSHA’s asbestos standards for construction, recognize roofing materials as a category warranting assessment and controlled handling due to the potential for fiber release during disturbance.

How Workers Were Exposed

Industrial workers generally represent the population most commonly identified in litigation involving Fibreboard rolled roofing and related products. Exposure pathways in industrial settings differed somewhat from residential or commercial roofing contexts, as industrial facilities often involved larger-scale application, modification, and removal of roofing systems over extended periods.

Litigation records document that plaintiffs alleged exposure during several categories of work activity associated with rolled roofing products:

Installation: Cutting rolled roofing to fit around penetrations, edges, and structural features generated dust and debris containing asbestos fibers from the felt substrate. Workers using utility knives, tin snips, or power cutting tools could be exposed to airborne fibers released at the point of cut.

Repair and patching: Industrial roofing maintenance frequently required workers to cut into existing roofing material, apply patches, or remove deteriorated sections. Aged roofing material that had experienced weathering, cracking, or blistering was more likely to release fibers when disturbed than freshly manufactured product.

Removal and demolition: Stripping existing rolled roofing during reroofing or demolition projects created significant fiber release potential, particularly when workers used scrapers, pry bars, or mechanical equipment to separate the roofing material from the deck. Dry or brittle aged material was especially prone to breaking apart and generating airborne particulate.

Handling and transport: Moving rolls of product, unrolling material across a roof surface, and disposing of off-cuts and waste material all represented incidental exposure opportunities that could accumulate over the course of a working career.

Plaintiffs alleged in litigation that workers in these roles were not adequately warned of the hazards associated with asbestos-containing roofing products and were not provided with appropriate respiratory protection or engineering controls to limit their exposure. Litigation records document that these allegations formed a core part of failure-to-warn and negligence claims brought against Fibreboard and related corporate entities.