Friable asbestos refer to asbestos materials that can be crumbled into dust / powder by hand. Friable asbestos include screed, pipe insulation, magnesite, and crocidolite / spray-on asbestos. Friable asbestos material does not include e.g. façade paint, tiles, heavy-duty joint mortar etc. materials which break by cracking rather than crumbling and which release minimum amounts of dust when breaking.