https://www.intensedebate.com/people/staydryroof">https://www.intensedebate.com/people/staydryroof. A high quality roofing will have them mounted around the edge of the roofline, where vertical walls fulfill the roofing https://antondfxa453682.blogstival.com/60973144/the-facts-about-stay-dry-roofing-uncovered