https://johnnylist.org/Stay-Dry-Roofing_323476.html">https://johnnylist.org/Stay-Dry-Roofing_323476.html. A top quality roof covering will have them installed around the edge of the roofline, where vertical walls meet https://estellenckv349724.webbuzzfeed.com/39894098/things-about-stay-dry-roofing