https://trello.com/w/staydryroof/members">https://trello.com/w/staydryroof/members. A quality roofing will certainly have them set up around the edge of the roofline, where upright walls meet the roofing system incline, https://geraldczed995928.designertoblog.com/70718366/the-buzz-on-stay-dry-roofing