I'm doing a house refurb and the structural engineer has approved removing two walls. On taking off the plaster they aren't standard brick, but some sort of dark blue/black brick that's very crumbly and weak.
Anyone any idea what these are?
It's a 1930s house in West London and all the external walls are standard brick.
Anyone any idea what these are?
It's a 1930s house in West London and all the external walls are standard brick.
