https://www.easel.ly/browserEasel/14621076">https://www.easel.ly/browserEasel/14621076. A quality roofing will have them installed throughout the edge of the roofline, where upright walls fulfill the roofing slope, https://jeanygeq912443.blog-ezine.com/39913042/the-facts-about-stay-dry-roofing-revealed