https://anotepad.com/note/read/qh45t2ki">https://anotepad.com/note/read/qh45t2ki. A high quality roof will certainly have them installed all around the side of the roofline, where upright walls meet the roofing system https://estellekjnr803545.therainblog.com/38161686/the-facts-about-stay-dry-roofing-uncovered