https://www.openlearning.com/u/staydryroofing-t93m0l/about/">https://www.openlearning.com/u/staydryroofing-t93m0l/about/. A top quality roofing will have them set up all over the side of the roofline, where upright wall https://asiyaflmf674238.articlesblogger.com/61858055/facts-about-stay-dry-roofing-uncovered