Where is Asbestos?
Where is Asbestos Found?
Sprayed on ceiling coatings
Also known as "cottage cheese" or "popcorn" ceilings, these coatings were either sprayed or troweled onto ceilings. The coatings contained asbestos from
1945 through 1978, and sometimes later. A laboratory analysis is generally required to detect asbestos in these materials. Acoustic ceiling tiles
Asbestos was incorporated into a wide variety of ceiling tiles, panels, and inserts.
Radiant heat boilers and pipe insulation Boilers and hot water pipes were commonly insulated with materials containing asbestos. These applications were originally intended to reduce heat loss and protect nearby surfaces from the hot pipes and boilers.
Forced air, gravity heaters and ducts Between 1935 and 1974, these types of heaters and distribution ducts were commonly insulated with an air-cell asbestos or asbestos tape. 
Roofing felt paper, shingles and wall siding
Roofing felt paper, or tar paper, can contain high percentages of asbestos. Some types of roofing shingles and exterior siding shingles were manufactured using portland cement containing asbestos as a binding agent.
Wall and ceiling insulation
Homes constructed between 1930 and 1950 may contain insulation made with asbestos.
Patching compounds, tapes and textures
Wall and ceiling joints were often patched with compounds containing asbestos.
Also, some textured paints sold before 1978 contain asbestos.
Vinyl and asphalt asbestos floor tile
Asbestos was added to some floor tiles and linoleums to strengthen them. It is also often bound in the backing materials of some tiles and linoleums.
Stoves
Cement sheets, millboard and paper that contain asbestos have been used frequently in homes where wood burning stoves have been installed. These insulations have been used to protect floors and walls around the stove from heat. Door gaskets in such stoves frequently contain asbestos.
