During a light rain, the roofing/gutter system works properly - all excess water piped down into weeping tile. However, we have this one strange area on our roof that causes problems; in a heavy rain, the water will have enough energy to spill past the path to the gutter and instead launch like a waterfall off the side of the house. We end up with a little pool of water where it hits, which dissapears down a minute or so after the rain stops...but it would obviously be better if that water was channelled down. [img]https://cimg2.ibsrv.net/gimg/www.doityourselft.com-vbulletin/1500x2000/inkedimg_1609_li_ce56279996a2fadbd71aca366eedf671dd59d31b.jpg[/img] The X above is where the water goes during normal rainfall. During heavy rainfall, it creates a waterfall indicated above. We also get ice dams there in the winter, but that's a different problem... Anyways, what would you recommend? I was thinking I would call a pro, but perhaps there is something I can do on my own? Install a new sloping gutter which drains into the existing network or a barrel?

I am installing a new shed behind our ADU. In order to maximize storage are I am planning to install it in front of the electrical panel and then cutting a hole in the side to access the panel from inside the shed. Due to the shed's roof overhang, there will be a gap of about 3-4 inches between the hole I cut in the shed and the external wall of the ADU. Any ideas on filling that gap? Shed panel is fortified polycarbonate and the ADU is stucco. Any help would be much appreciated.