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Oregon Department of Environmental Quality

Air Quality

Asbestos Program

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What is asbestos? 

Asbestos is a mineral that can be broken down into very fine fibers that are heat-resistant and extremely durable. Because of these properties, asbestos was widely used in construction materials until 1987. As of 1987, most building materials no longer contain asbestos.

Depending on its condition, asbestos in your home may be hazardous to your health. As long as asbestos is not disturbed, damaged or worn, or the material is sealed, it is not considered a health hazard.

If you're thinking of buying a pre-1987 house that needs remodeling, or planning to remodel your current pre-1987 home, have a qualified inspector survey the house for asbestos before you buy or remodel. Improper handling of asbestos-containing materials can be expensive.

Friable and Non-friable

Friable asbestos-containing materials (ACM) will easily release fibers when crushed. Examples of friable ACM can include, but are not limited to, sheet vinyl flooring, insulation on piping, duct and boilers, fireproofing, ceiling texture and panel products, and soundproofing. Please contact us to obtain Friable guidance documents.

Non-friable asbestos-containing materials (ACM) have a binder that holds the asbestos fibers within a solid matrix and will not allow asbestos fibers to release easily unless mishandled, damaged, or in badly worn or weathered condition. Non-friable materials must remain in non-friable condition (predominantly whole pieces) during the removal and disposal process. Examples of non-friable ACM can include, but are not limited to, vinyl floor tile, AC water pipe, and cement (transite) siding or roofing.

  Image of asbestos
Sample of raw asbestos. The nature of this type of asbestos allowed it to be woven into cloth and its versatility made it the chief type of asbestos used in building materials.

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For more information about Air Quality call 503-229-5359 or email.

Oregon Department of Environmental Quality
Headquarters: 811 SW Sixth Ave., Portland, OR 97204-1390
Phone: 503-229-5696 or toll free in Oregon 1-800-452-4011
Oregon Telecommunications Relay Service: 1-800-735-2900  FAX: 503-229-6124

The Oregon Department of Environmental Quality is a regulatory agency authorized to protect Oregon's environment by
the State of Oregon and the Environmental Protection Agency.

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