One of the most worrying issues with asbestos is that in the event that it does get disturbed, it can be easily released into the air, and remain there for some time. It is thought that disturbed asbestos can stay airborne for as long as 48 to 72 hours before settling.
Asbestos fibers do not evaporate into air or dissolve in water. However, pieces of fibers can enter the air and water from the weathering of natural deposits and the wearing down of manufactured asbestos products.
Theoretically, asbestos will settle after 48-72 hours as we've mentioned. But the fibers are very light and thinner than hair strands so even the slightest movement or breeze can cause them to become airborne again. So unless you remove the source of the fibers, they can stay in the air for a long time.
Luckily HEPA filters capture over 99% of all particle sizes (even the smallest particles) 0.3 microns, so they should capture plenty of asbestos. The graph below shows the hardest sized particle for a HEPA air purifier to filter is around . 3 microns.
It can take from 10 to 40 years or more for symptoms of an asbestos-related condition to appear (2). There is some evidence that family members of workers heavily exposed to asbestos face an increased risk of developing mesothelioma (12).
If you breathe asbestos fibers, you may increase the risk of several serious diseases, including asbestosis, mesothelioma and lung cancer. Asbestos exposure may increase your risk for cancers of the digestive system, including colon cancer.
If you think there may be asbestos in your home, don't panic. Asbestos-containing materials that aren't damaged or disturbed are not likely to pose a health risk. Usually the best thing is to leave asbestos-containing material alone if it is in good condition.
It is difficult to tell when asbestos is in the air. The tiny fibers have no odor or taste, and they do not irritate your eyes or throat or make your skin itch. If you know or suspect there is asbestos in your home or workplace, leave the material alone.
Do not dust, sweep, or vacuum debris that may contain asbestos. These steps will disturb tiny asbestos fibers and may release them into the air. Remove dust by wet mopping or with a special HEPA vacuum cleaner used by trained asbestos contractors.
If asbestos is present, DO NOT open windows or place a blower inside a building to dry it after a flood – this will keep asbestos fibres airborne and increase the fibre concentration in the air as the building begins to dry out.
Ambient, or background, air usually contains between 10 and 200 asbestos fibres in every 1000 litres (or cubic metre) of air (equivalent to 0.01 to 0.20 fibres per litre of air) meaning we may breath up to 5000 fibres per day. However, it is extremely rare to get an asbestos-related disease from this level of exposure.
N95 masks do NOT protect you against chemical vapors, gases, carbon monoxide, gasoline, asbestos, lead or low oxygen environments.
EPA reporting suggests asbestos fibers can stay airborne long enough to travel long distances. Other research shows asbestos fibers can travel several miles.
Can asbestos be removed from the lungs? No known method exists to remove asbestos fibers from the lungs once they are inhaled. Some types of asbestos are cleared naturally by the lungs or break down in the lungs.
No amount of asbestos exposure is safe. People must avoid inhaling the toxic dust. Most asbestos-related diseases arise only after many years of regular exposure. An extremely intense short-term exposure also heightens the risk of disease later in life.
Once in the washing machine, clothes with asbestos dust may also contaminate other clothes in the same load of laundry. Anyone who wears these clothes after laundering may end up inhaling asbestos fibers. Washing asbestos-contaminated clothing can also contaminate the washing machine itself.
Asbestos is no longer added to popcorn ceilings because it's a known health risk. The chances of your ceiling containing asbestos are low for any installations in the late 1980s or after. Newly constructed ceilings don't use asbestos.
Your older home probably did not come with an inventory of all asbestos containing materials, but if the house in which you live was built before 1980, there's a good chance that you'll find asbestos containing materials in the walls, ceiling, roof or floors – or all of the above.
If you know you've had asbestos exposure, you should have regular exams and chest X-rays. These tests don't prevent asbestosis but can help catch it early. If you smoke and have exposure to asbestos, quitting smoking is your best way to reduce your risk of getting cancer.
One-time exposure to asbestos can cause diseases, including mesothelioma cancer. Researchers have found repeated exposure to asbestos increases the risk of developing asbestos-related cancers. The risk to individuals who have a one-time exposure to asbestos is generally lower compared to long-term or repeated exposure.
Asbestos was used extensively in home construction from the early 1940s through the 1970s as highly-effective and inexpensive fire-retardant material and thermal and acoustic insulator.
There is no way to know whether these materials contain asbestos without having them tested.