The material was used in building work right up until the 1970s. Known for its inclusion in insulation, asbestos could also be found in furnace ducts that have been insulated, steam pipes, and even boilers. When damaged or removed without care, asbestos fibers can be released and inhaled. Here in Florida, it wasn't as bad. But asbestos siding, AC ducts, floor tiles, and other materials are still found in homes. We see them often on home inspections.
Furthermore, resilient floor tiles and the reverse side of vinyl sheet flooring can also cause a problem. When these tiles are then sanded, it releases the problematic fibers.
In addition to this, millboard and paper as well as cement sheets that were used to insulate wood-burning stoves could provide issues as could the soundproofing material that was once sprayed onto ceilings. Whenever this succumbs to water damage or starts to crumble, the fibers can be released into the air.
Although these are the main sources, asbestos was also used for patching and joint compounds, textured paints, cement roofing, shingles and siding, artificial ashes, and many other household products. Although these latter products would only release fibers when sawed or drilled, they still presented a danger that nobody knew existed.