https://www.pearltrees.com/staydryroof1/item775054662">https://www.pearltrees.com/staydryroof1/item775054662. A quality roof will have them set up all around the side of the roofline, where upright wall surfaces fulfill https://woodyckko344574.blogthisbiz.com/46974905/3-easy-facts-about-stay-dry-roofing-shown