If its an internal wall on the other side and there's no source of moisture then it's obviously coming from your side. There may bad staining on crowley's side which you will bring to his attention.
It may just be a result of the prev moisture breaking down the bond of the plaster.
If its an internal wall on the other side and there's no source of moisture then it's obviously coming from your side. There may bad staining on crowley's side which you will bring to his attention.
It may just be a result of the prev moisture breaking down the bond of the plaster.