https://www.gaiaonline.com/profiles/staydryroof/50635355/">https://www.gaiaonline.com/profiles/staydryroof/50635355/. A quality roofing will have them set up around the edge of the roofline, where vertical walls meet https://vinnysktl799769.bloginder.com/40189743/examine-this-report-on-stay-dry-roofing