My brother-in-law lives in Northeast Vermont, in sight of the Canadian border. I have seen houses up there in winter with a sheet of ice from the gutters to the ground. Even here in New Jersey we get ice dams on our roofs. The warm air in the soffits melts the snow and it freezes when the sun goes down. After a few freezing and thawing cycles, the ice and water go over the back of the gutter and facia board into the soffit, and from there into the house. Then I see houses with pots and pans in their front bow windows to catch the dripping snow melt. Almost none of these 60 year old houses have ice and water dam material overlapping the facia board to roof deck gap, and almost none of my neighbors bother to do something about the problem.
