Underlayment as well as Steel Roof Covering-- Metal Roofing 101 with Todd Miller

https://ace-wiki.win/index.php/8_STEPS_HOW_TO_INSTALL_STEEL_ROOF

Exposure-- A northern direct exposure or shaded areas will usually contribute to larger ice dams. While gutters might make it much easier for an ice dam to start, big dams can occur on roofs with no gutters. <h3>HOW