Parts of the House Which Need Asbestos Removal
Many older buildings contain asbestos which up until the late 70s was usually applied with a sprayer and used as a flame retardant or as insulation. In some cases it was sprayed above false ceilings and inside certain ducts. The production of asbestos was banned in the early 70s but the ban did allow for the use of existing stock, so houses still used asbestos until the mid 80s. Today these homeowners are faced with the need for asbestos removal in these older homes, and the only way to tell if these houses have asbestos in them is by having an asbestos removal expert take a sample and have it tested by a specialized lab.
Other possible ways of recognizing asbestos:
Asbestos is generally an off white material, although sometimes it was made in blue or brown and the appearance changes depending on the material it was mixed with. Sometimes it was mixed with cement, asphalt, starch, polymers and other adhering materials.
A common place where asbestos material might be found is in the heating duct work. Some ducts were made of asbestos and others were wrapped in a form of asbestos. These old ducts look a bit like corrugated cardboard and some insulation has a similar appearance but without being corrugated. When you find this type of material, you should call an asbestos removal specialist to come in and take a sample.
Duct work made of asbestos is of special concern because as it begins to deteriorate the fibers are blown into the house by the air conditioner. Some duct wrapping can be encapsulated so as to avoid having any of the fibers blown into the house. Otherwise asbestos removal is your best bet. Although somewhat expensive it is preferable to make this expense rather than have to deal with the problems that come from asbestos exposure.
Another likely place to find asbestos is in or near a furnace. The furnace may have an asbestos lining or it may even sit on an asbestos pad. Wear and tear to these items will cause the fibers to float around, so it is best to remove it, or to encapsulate it.
At one point, pipes where lined with asbestos, especially pipes that connected to radiators or heating systems. If you find a white surface material, then it is probably best to repair it with glass cloth.
Be careful with old wiring. There were some old knobs and tube wires that had a white coating material that was covered with black fabric. Don't pull these out, just bypass with new wiring.
Artificial fireplaces that were made prior to 1978 used asbestos as ashes. If these still exist it is essential to remove them. Vinyl flooring and roofing tiles were also made of asbestos. In some cases you should apply asbestos removal, but in others you should place an overlay and lay your floor on top. It really depends on what the asbestos contractor suggests.
Depending on the way asbestos was applied, it may or may not pose a threat to the users of the house or building. It does not pose a threat if the fibers cannot come loose, but many forms of its application, especially when sprayed on allow the fibers to become loose and go airborne. In these cases you may need asbestos removal.
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