My thoughts too, such a random place and it doesn’t look consistent throughout as it’s not present where other patches have come off
But no idea what it could be, random for any material to be there
I’ve recently moved into an early 1960’s house and have noticed under the stairs where the plaster is coming away this insulation? Does it look like asbestos or is there anything else it could be?
I’ve booked for a company to come and take a sample but they can’t come for another 2 weeks so any...