Tends to be whenever we get anything more than light rain. The wall above is a parapet with coping stones. Can’t work out of it’s the window sealant or water ingress through the wall above.
During the recent wet weather I have been getting damp patches in a window reveal. I don’t know whether the leak is coming from a badly sealed window or because the coping stones above have allowed water into the wall itself. Today it has actually stated to drip. Any advice would be much...