Non-Friable Asbestos
Non-friable asbestos refers to asbestos-containing materials in which the fibers are bound within a solid matrix (such as cement, vinyl, or resin) and cannot be crumbled by hand pressure under normal conditions. While less immediately hazardous than friable materials, non-friable asbestos becomes dangerous when cut, drilled, sanded, or otherwise mechanically disturbed.
Non-friable asbestos products were among the most widely used building materials in the 20th century. Common examples include vinyl floor tiles, asbestos-cement siding and roofing (transite), brake pads, clutch facings, and asbestos-cement pipes. In their intact state, the asbestos fibers are locked within the binding material and do not pose a significant inhalation risk.
The danger of non-friable asbestos arises during renovation, repair, or demolition activities that break the material's matrix. Cutting cement board with a power saw, sanding floor tiles, or breaking apart old pipe insulation releases asbestos fibers into the air. Workers performing these activities without proper protection face significant exposure risk.
Regulations distinguish between friable and non-friable asbestos in building surveys and abatement requirements. Non-friable materials in good condition may be left in place and managed through an operations and maintenance program rather than removed. However, any planned disturbance requires professional assessment and proper containment. Learn about asbestos exposure risks.
- Also known as
- Bonded asbestos, Asbestos-containing material in good condition
- Category
- Asbestos
- Related terms
- Friable Asbestos, Transite, Asbestos Abatement, Chrysotile, Occupational Exposure
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