Leaking roofs are no fun and when it can ruin all your walls, furniture etc its time to get the professionals in. This roof was leaking due to having a very narrow valley so we went there removed the old lead where it was also corroded and punctured in a couple of places. We build a new wider valley and installed Code 6 Lead 24 inch wide to remediate the problem. New slates around the repaired area and no more leaks. Happy days!