Hello, have terrible problems in my house, have had many burst pipes in a particular corner, in same room things rusting of the wall ie radiator, brackets etc. Anyhow here is a picture of the outside worst bit. Can anyone tell if this is likely to be the culprit and what to do about it please? Extra info brand new roof fitted about two years ago and repositioned roof gutter that had been causing a leek elsewhere on the other side of the wall. Not sure if the wall looks 'normal' or something is the matter. I suspect the latter. Thank you to anyone who can help.