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Originally Posted by Shin Pad
Ice damming causes roof leaks when the ice build-up at the edge of the roof works it's way under the shingles and thus when it melts you have your current moisture problem. You have to remove the shingles for at least 4'-0" from the roof edge at the area where you have the ice damming occurring, and they install an ice and water shield membrane. Make sure the sheathing hasn't rotted - otherwise you need to replace the rotted portions before installing the ice and water shield. Once you have the ice and water shield in, reinstall the shingles. This is something you should do next spring. For now, you just have to keep remove the snow where the ice damming is occurring - really nothing else you can do in the winter. Someone mentioned a nylon stocking filled with salt (rock salt I assume) - that's a good idea as a temporary fix. You just want to make sure that any snow that melts on the roof, has a clear passage to the eave trough. You don't want it to be blocked by the ice dam, freeze and make the problem worse.
Do you have any roof intersections where the ice damming occurs - ie - dormers or valleys between roof direction changes (places where snow can build up)? Or is the ice damming occurring in a straight portion of the roof edge?
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No intersections up there, just a straight portion down. Which is really weird. You would think it would need a valley or something to build up an then cause an issue. I'm thinking of obviously a full fix in the spring, but also heat tape as from what I have read it would make a difference in climates with constant freeze/thaw (here). But boggles my mind how they keep dragging their feet getting someone up there to do something. Maybe that's because they know there isnt much that can actually be done until spring?