It also depends on how high off the ground you are. Be aware that (at least in Wisconsin) if you are more than 24" above ground to the floor of the room, you can't use a vinyl product like PGT Eze-Bre ... read more
Is there anything I can do from inside my attic to battle ice dams? I'll worry about preventing them next, for now I have them and want to speed up their melt.
We think this is a great blog on ice damming and the need fir insulation.
http://www.callenblog.com/keeping-attic-heat-and-moisture-under-control
Good luck.
Home Exteriors by Callen