Hello, I hope someone can help, I recently bought and moved into a house built in 1970 in the south east. We are aware there may be asbestos in the artex ceiling from our survey but after doing lots of decorating and sanding I am now worried that it could be in the walls too. Attached is an image of what the walls are made up of, a thin grey covering and then mortar? If the top coating is plaster why is it grey? I am not clued up at all when it comes to building materials.... I have sent some samples off for testing but have had a couple of sleepless nights over this so would appreciate and reassurances if there are any. Thank you