I've had this on my walls inside the corner of my bedroom. Is the roof leaking? It's right near the downpipe (which isn't blocked ) and I had a similar problem on the walls near the downpipe at the other side of my house.
Does my flat roof need repairing or a new one laid? It is moisture, right?
Cosmetically, do I just sand and paint?
Does my flat roof need repairing or a new one laid? It is moisture, right?
Cosmetically, do I just sand and paint?