https://blogfreely.net/staydryroof/2o3fu8cnw2">https://blogfreely.net/staydryroof/2o3fu8cnw2. A quality roof will certainly have them mounted throughout the edge of the roofline, where upright walls meet the roof https://emiliajkuc593929.ageeksblog.com/38048732/our-stay-dry-roofing-statements