https://bizidex.com/en/stay-dry-roofing-construction-862172">https://bizidex.com/en/stay-dry-roofing-construction-862172. A top quality roof will have them set up all around the side of the roofline, where upright wall https://lilymadd713100.blazingblog.com/39567167/the-smart-trick-of-stay-dry-roofing-that-nobody-is-discussing