Asbestos was used in over 3,000 known products, touching nearly every corner of construction, manufacturing, transportation, and daily life throughout the 20th century. Its popularity came down to a rare combination of natural properties: it resists heat, stands up to acid and chemical exposure, doesn’t conduct electricity, and holds together under friction and abrasion. For decades, it was treated as a miracle material, cheap and versatile enough to show up in everything from Navy warships to household hair dryers.
Building and Construction Materials
Construction was the single largest consumer of asbestos. The mineral was mixed into cement to create a product called Transite, which was molded into wall panels, siding, shingles, chimney flue linings, ducts, and pipes. Transite boards were popular because they were lightweight, fireproof, and could be cut and installed like wood.
Flooring was another major category. Vinyl floor tiles manufactured between the 1920s and 1980s commonly contained asbestos, along with the mastic (adhesive) used to glue them down. Vinyl sheet flooring, carpet adhesive, and even vapor barriers beneath flooring could all contain the mineral. Roofing products were equally saturated: asbestos showed up in roof shingles, roofing felt, base flashing, and tar coatings sometimes sold under the brand name “Black Jack.”
Attic and wall insulation represented another widespread use. Vermiculite insulation, particularly the well-known Zonolite brand mined in Libera, Montana, was contaminated with asbestos and installed in millions of American homes. Loose-fill and batt insulation in walls could also contain it.
Fireproofing Steel and Concrete
From the 1950s through the 1970s, asbestos was sprayed directly onto structural steel beams, concrete ceilings, and support columns inside commercial buildings, high-rises, and schools. This spray-on coating, a wet mixture of asbestos fibers blended with adhesives and resins, was one of the cheapest ways to meet fire codes for structural steel. Steel loses its strength rapidly in a fire, so a thick layer of sprite-applied asbestos insulation could buy critical time before a building’s frame began to fail. The practice was gradually phased out by the end of the 1970s, but the coatings remain in place inside many older buildings today.
Ships, Submarines, and Military Equipment
The U.S. Navy was one of the heaviest users of asbestos in the country. Thermal insulation for machinery, equipment, and piping systems was the primary application aboard ships. Engine rooms, boiler rooms, and the miles of steam piping running through a vessel were all wrapped or coated with asbestos-containing insulation to manage extreme heat in confined spaces.
A 1980 Government Accounting Office report found that asbestos thermal insulation was standard across nearly every class of Navy vessel, from aircraft carriers and nuclear submarines to harbor tugs, oilers, and oceanographic research ships. Even after the Navy began phasing it out, certain shipboard applications had no suitable replacement for years. Gaskets, pipe hanger liners, boiler casing insulation, and catapult trough insulation on aircraft carriers continued to rely on asbestos because no alternative could handle the specific combination of heat, pressure, and vibration.
Beyond insulation, asbestos fibers were embedded in electrical resistors used in Navy electronics, wrapped around electric cabling in galley ranges, and built into shipboard brake and clutch systems.
Automotive Brakes and Clutches
Asbestos was a standard ingredient in brake pads, brake shoes, and clutch linings for cars, trucks, and heavy equipment. These components generate intense friction and heat during normal use, and asbestos fibers helped them absorb that heat without breaking down or catching fire. The dust created when brakes wore down was a significant source of exposure for mechanics. OSHA’s longstanding guidance tells automotive technicians to assume that any brake or clutch component could contain asbestos unless proven otherwise. Some aftermarket brake and clutch products continued to contain chrysotile asbestos into the 2020s, which the EPA finally moved to ban in 2024.
Water Pipes and Public Infrastructure
Asbestos-cement pipe was used extensively in the mid-1900s for drinking water distribution systems, particularly across the western United States. These pipes were durable, resistant to corrosion, and inexpensive compared to metal alternatives, making them attractive to municipalities building out water and sewer networks. Many of those pipes are still in service today, buried under streets and neighborhoods, and they represent an ongoing infrastructure challenge as they age and deteriorate.
Household Appliances and Consumer Goods
Asbestos found its way into a surprising range of everyday products. In 1979, the Consumer Product Safety Commission identified more than 40 models of hand-held hair dryers and styling tools from major brands that contained asbestos components. Some dryers used asbestos-wrapped coil supports, while heat wands and styling tools contained asbestos glass laminate cores or inorganically bonded asbestos heater supports. These products blew heated air directly past asbestos components and onto consumers’ heads.
Other household items that commonly contained asbestos included ironing board covers, toasters, popcorn poppers, slow cookers with asbestos-lined heating elements, and hot water heaters with asbestos-wrapped electric cabling. Pot holders, oven mitts, and stovetop heat diffusers were sometimes made with asbestos textiles.
Protective Clothing and Fire Equipment
Because asbestos fibers could be woven into fabric, they were used to make heat-resistant clothing for firefighters, welders, foundry workers, and military personnel. Full fire proximity suits, welding gloves, protective blankets, and aprons were all manufactured from asbestos textiles. During World War II, asbestos was used in incendiary bomb-smothering mattresses for air raid defense and in heat-resistant gloves for military crews handling hot equipment. Even commercial bakeries and industrial kitchens used asbestos gloves for handling items from ovens.
Industrial and Chemical Processing
Piping system gaskets and packing materials across thousands of American industries contained asbestos. Anywhere a seal needed to withstand high temperatures, chemical exposure, or pressure, asbestos gaskets were the default choice. The chlor-alkali industry, which produces chlorine and caustic soda, used chrysotile asbestos diaphragms as a core part of its manufacturing process. Chemical plants relied on asbestos-containing sheet gaskets, and oil industry equipment used asbestos brake blocks. These were among the last industrial uses still active when the EPA issued its 2024 ban on chrysotile asbestos, finally setting deadlines for industries that had continued using the mineral for decades after most other applications ended.
The Rise and Fall of Asbestos Use
U.S. asbestos consumption peaked in 1973 at 794,000 metric tons in a single year. Global production that decade was enormous, exceeding 4.3 million tons annually by 1988. The decline came in stages. U.S. consumption dropped sharply after 1973 as health evidence mounted, briefly ticked up in 1984 during a construction boom, then fell steadily through the late 1980s and 1990s. Global production dropped 12 percent between 1991 and 1992 alone, falling from 3.5 million to 3.1 million tons as more countries began restricting or banning the material.
The sheer variety of asbestos applications means the mineral is still present in millions of older homes, commercial buildings, ships, and underground pipes. Most of it poses little risk when left undisturbed, but renovation, demolition, or deterioration can release fibers into the air, which is why identification and careful handling remain important decades after the peak of asbestos use.