https://peterjackson.mee.nu/where_i_work#c2746">https://peterjackson.mee.nu/where_i_work#c2746. A quality roof will certainly have them mounted around the edge of the roofline, where vertical walls meet the roofing https://ineslkdj367987.frewwebs.com/39340724/7-easy-facts-about-stay-dry-roofing-explained