https://justpaste.it/nc6xw">https://justpaste.it/nc6xw. A top quality roofing will have them mounted all around the side of the roofline, where vertical walls fulfill the roofing system slope, around pipes that hold up https://haleemaidrv128810.atualblog.com/46125179/stay-dry-roofing-things-to-know-before-you-get-this