Asbestos information - Mt. Vernon Inspection Associates

Asbestos Information
Asbestos is a tiny fiber that was used in the past primarily as insulation. It was also added to some building materials to provide added strength and flame resistance. The problem with asbestos is that it has been shown to cause lung cancer and mesothelioma in individuals that were exposed to large amounts of free-floating asbestos fibers in the air. These conditions typically did not become apparent until around 30 years after the exposure. Because of the health hazards of asbestos fibers, its use in insulation and paint was banned in the 1970’s.

What you need to know about asbestos
Homes built prior to the 1970’s could contain asbestos in insulation, plumbing, paint, wall joint compound, and other building materials. However, as long as the materials are in good condition, they pose no danger. Asbestos is only a threat if the fibers are released into the air and can be inhaled.

Renovations or demolitions of materials containing asbestos can release the fibers into the air. Therefore, the National Emissions Standards for Hazardous Air Pollutants (NESHAP) requires the owner of any property containing asbestos building materials to get an asbestos inspection prior to any demolitions or renovations of that property.

Asbestos Siding

Asbestos shingle siding, commonly installed in the 1940's and early 1950's, consists of a material known as "Transite". Transite siding is composed of asbestos fibers embedded in a cement medium which prevents the release of fibers into the air where they might be inhaled.
Unless the material is ground into dust by application of power tools or other destructive processes, Transite is not regarded as a significant health hazard.
If you should decide to alter the exterior of the building, removal, handling and disposal of asbestos-containing material may need to be assigned to a specially licensed professional, and such services can be quite expensive. Requirements for removal, handling and disposal typically vary by area.
Also, when reselling the home, the presence of asbestos material must be disclosed, and this can adversely affect the interest of some buyers, regardless of the relative safety of the material.
The Environmental Protection Agency (EPA) has classified asbestos as a Class A, Human Carcinogen, based on inhalation studies.

How can asbestos be removed?
If your home contains asbestos, you have two options: removal of the material or sealing the material to prevent it from releasing fibers. Either option requires the help of a trained professional.

How do I know if my home contains asbestos?
If you suspect your home or a home you are considering buying may contain asbestos, it’s vital you get a thorough inspection by a qualified professional. Asbestos can only be detected by a special microscope. Asbestos inspectors are trained in detection and will take samples from your home for further analysis.