Take most of the sibling replies here with a grain of salt. In areas where there are large snowfall events (eg Tahoe) the story is very different; panels can an

Take most of the sibling replies here with a grain of salt. In areas where there are large snowfall events (eg Tahoe) the story is very different; panels can and do cause ice dams, dangerous snow slides, and even the panels can get ripped right off the roof.