Product Description
Johns-Manville marketed Cerawool as a refractory ceramic fiber blanket for lining industrial furnaces, kilns, boilers, and heat-treat equipment. According to publicly filed asbestos litigation records, Cerawool was sold alongside — and often installed together with — Johns-Manville asbestos-containing hot-face refractories, block insulation, and pipe covering, all of which allegedly generated respirable fibers during cutting, layering, wiring in place, and tear-out. Workers allegedly handled Cerawool blanket next to legacy asbestos linings during rebuilds, so shutdown dust clouds allegedly contained both fiber types.
Johns-Manville’s asbestos liabilities are administered by the Manville Personal Injury Settlement Trust, one of the earliest and largest asbestos trusts.
Workers Exposed
Ceramic fiber installers, refractory masons, and industrial insulators allegedly cut Cerawool to size, stacked it against hot-face brick, and pinned it with anchor studs on furnace crowns and boiler walls. Furnace-relining crews, boiler-refractory installers, and kiln shutdown contractors allegedly tore out prior asbestos linings before laying in the new blanket, allegedly encountering airborne asbestos during the demolition phase.