https://www.awwwards.com/staydryroof/">https://www.awwwards.com/staydryroof/. A top quality roof will have them set up throughout the edge of the roofline, where vertical wall surfaces meet the roofing incline, around https://lilianztkn824481.dailyhitblog.com/45093841/the-25-second-trick-for-stay-dry-roofing