Found it on a shelf in my wall furnace, hence the burnt look... looking for input on its origin. Thanks
I have sent away the popcorn ceiling samples for testing, but didn't tear out any of the brown paperish backing above it. Should I have? Here is an image:
I have a 1960's dormer-bungalow (UK). I'm currently having a back extension which requires removal of the old soffits. The soffits are boarded with asbestos. (Photo below) By looking at this, is ...