https://hearthis.at/stay-dry-roofing/set/stay-dry-roofing/">https://hearthis.at/stay-dry-roofing/set/stay-dry-roofing/. A quality roofing system will have them mounted around the side of the roofline, where upright wall https://barryvbra678315.theisblog.com/39927957/getting-my-stay-dry-roofing-to-work