Hi I hope someone can help me to decide between the different advice & quotes I've received from roofers. We live in a 1920s terrace with a tiled roof. After heavy rain last week, water started dripping into the corner of our bedroom. I went into the loft to check. The timbers, insulation and plasterboard in the corner above our bedroom were damp. This is directly underneath the roof valley. We've had four people out to look at it. Three of them said that the problem was due to a combination of two things about the lead in the valley gutter: - it's too low at the sides (only a couple of