https://www.pearltrees.com/staydryroof1/item775054662">https://www.pearltrees.com/staydryroof1/item775054662. A quality roof will certainly have them mounted all over the side of the roofline, where vertical walls https://jonaszhjv850674.spintheblog.com/39903526/some-known-incorrect-statements-about-stay-dry-roofing