What is a standing seam metal roof? A standing seam panel is flat with vertical or trapezoidal legs on each side. Clips are used in this type of roofing system to eliminate penetrations in the panels. krestaroofing2020-09-10T09:38:54+00:00 Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail About the Author: krestaroofing Kresta Roofing is a roofing contractor near San Antonio, Texas providing residential and commercial roofing services as a top rated with 40 years of experience roofing contractor.