My professional fireplace company has two options, of which we've implemented one for our clients in the past. If you want to essentially permanently block it off, there is something like an "air pill ... 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