Learn How To Install Corrugated Metal Roofing Panels. Step By Step Directions To Install Metal Roofing Trim For Corrugated Sheeting And Exposed Fastener Panels. Installation. Installing metal roofing and trim on an exposed fastener panel Step By Step Metal Roofing Installation Instructions That Cover These Panels: Corrugated, R Panel, PBR Panel, 7.2 Panel, Western Rib, U Panel, and Ag Panels. Installation instructions for eave trim on a metal roof. Installation instructions for gable trim on a metal roof. Installation instructions for ridge cap on a metal roof. Installation instructions for synthetic roofing underlayment on a metal roof. Pipe flashing rubber boot installation on a metal roof.