Hi All, I was cutting a small chunk out today to in an internal block work wall in a house built around 1984 to gain some clearance, when I noticed that what I took to be breeze block appeared to contain what looked like very small woodchips a bit less than 1mm or so thick, they were wood coloured not white so I figured they shouldn’t be anything nasty like asbestos . I supposed it to be some kind of lightweight block, as it’s an upstairs wall just resting on a timber bearer across the joists. Does anyone know what it is called please? I would be interested to know as I haven’t come across it before, looking on the web there are a number of “new Green” products being promoted using wood chip but they seem to look more like straw or chipboard. Best wishes, footprints.