What does Category II non-friable ACM refer to?

Category II non-friable asbestos-containing materials (ACM) are defined as materials that are not likely to become damaged or create dust under normal conditions. These materials are typically more durable and stable compared to friable asbestos materials, which can be easily crumbled or reduced to powder. Category II non-friable materials can still contain asbestos but are typically found in solid forms, such as floor tiles, roofing shingles, or vinyl flooring, where the asbestos fibers are bound tightly within a matrix, making it unlikely for fibers to be released into the air.

Since these materials are less susceptible to damage and do not easily release fibers, they pose a lower risk to health when handled correctly. It is essential to recognize this distinction because it affects the approach to managing or abating asbestos materials in buildings. Maintaining the integrity of Category II non-friable ACM is crucial to preventing any potential health risks associated with asbestos exposure.