https://www.freelistingusa.com/listings/stay-dry-roofing-3">https://www.freelistingusa.com/listings/stay-dry-roofing-3. A high quality roofing system will have them set up all over the edge of the roofline, where https://elainewemz960968.bloggactivo.com/38611369/the-best-guide-to-stay-dry-roofing