john caravette_earth wind and solar energy_chicago, il (7). oct 2013 016. step #1 \u2013 contact the snow guard manufacturer to work with them to gain a recommended layout and pattern for the specific roofing project you\u0027re working on. these copper snow guards were placed at 12\u2033 intervals around the entire perimeter of the roof snow guards keep sliding snow and ice on the roof until it . from ridge to eave. metal roll roofing 96 with metal roll roofing. decra metal roofing.