It’s definitely rain rather than damp. Appeared on Friday when weather was terrible on the inside of our upstairs bedroom. Three small wet patches. The wind was driving the rain against that side of the house. It’s an old Victorian house. It’s away from the window and mid height so i don’t think connected to the roof. No dripping gutter that I can see and not near a downpipe.
do we just hope it doesn’t happen again or do the bricks need looking at?