My hubby last year kept saying water was running down the wall, I kept saying well it would do as the guttering is 300 years old and possibly a leak in a joint, he kept saying can I see it, I kept going outside and said "yes" to please him THEN!!! on a very rainy day I did see it and it was inside the house and not on the outside at all....I took no notice of him that time, we got it fixed as the downright was full of pearlings from having the house wall re rendered!! whops!!