Thanks for the suggestion, I'll look for a place to send a sample. Having looked a bit closer I don't think it is a board because there are no seams it appears to be more like a concrete render? See image.
Hi all, We have just purchased and started renovating a victorian terrace and have started by removing some tired wallpaper. We expected to find some type of plaster underneath but for the majority of the house the walls are covered in a dark grey concrete looking board. I have never seen this mater...
