Our 70s built house has a flue rather than a chimney. This serves the fireplace in our front lounge. In the main bedroom above the lounge, we recently noticed some minor discoloration of the wallpaper. Yesterday, after a heavy storm, the discoloration was more spread and serious, though it has dried out since.
I shall not be diying, but would like some idea, what may be the source, the cure and any other advice you can give. Please!
I shall not be diying, but would like some idea, what may be the source, the cure and any other advice you can give. Please!