Many materials in older buildings contain asbestos, including floor tiles, roofing and siding. However, the risk of exposure is low, as these materials are tough and don’t easily break down or release fibres unless subjected to significant forces. The danger arises when these materials are disturbed during construction or renovation. This can be due to building demolition, plumbing and heating repairs or from a variety of other reasons. The only way to know if there is a risk of asbestos in your home is to have an inspection by a qualified professional.
Asbestos fibers, if inhaled, can become lodged in the lining of the lungs or abdominal cavity. This can lead to a number of diseases, such as mesothelioma and lung cancer. If you are planning to renovate your house and think there may be asbestos in the walls, roof or floor, you should consult a certified asbestos professional before proceeding. This professional will conduct a thorough inspection and advise you of the risk.
If asbestos is present, the home owner must follow special work practices to limit the release of asbestos fibres. These include the use of only licensed asbestos removal cost contractors (Class I and Class II), the use of a vacuum system with HEPA filters, and the sealing of all portals leading to the abatement area. The contaminated area should also be enclosed within a decontamination unit with a negative pressure system. This will exhaust air, through a HEPA filter, from the contained area into an outdoor decontamination unit. This will prevent air from “back drafting” into the regulated area and the release of asbestos fibres.
During asbestos removal, professionals will wet the asbestos material and then remove it using various tools. This is done because the extra moisture helps to prevent the release of asbestos particles into the air. The material is then placed into durable, air-tight waste bags and disposed of in sealed containers for transport to an approved landfill site.
When working with asbestos, wear personal protective equipment (PPE) such as a respirator, mask and disposable overalls. Ensure that the PPE is well fitted, not loose and not too tight. When leaving the work area, make sure there is no dust on shoes, clothing or tools and that all waste bags are clearly labeled as asbestos waste. All contaminated clothing should be removed, sprayed with water and placed in the asbestos waste bag for disposal (asbestos-containing overalls can only be recycled in certain states). Shower thoroughly after completing any asbestos work, and wash your hands before meal breaks and at the end of each day. This will help reduce the risk of infection.