from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective Not easily broken into small
fragments, crumbled, or reduced to powder.
- noun construction A material that, when dry, cannot be
crumbled, pulverizedor reduced to powderby hand pressure.
from Wiktionary, Creative Commons Attribution/Share-Alike License
There it is differentiated between tightly bound Asbestos (nonfriable Asbestos) and weakly bound Asbestos (friable Asbestos).
Therefore, in the following, only nonfriable Asbestos materials are considered, which in particular are used in the form of roofing.
Friable asbestos is more of a health concern, although nonfriable asbestos that does not crumble with hand pressure also can become an issue, especially when it is broken up, he said.