Living in the "Great White North" every time I've had to re-shingle a roof in the places I've lived, I've run the rubber membrane up back from the edge at least one width, some times two overlapping and before the membrane, was sold here it was heavy roofing felt with the edges gooped so that the two widths formed a single sheet every time I did that, my ice dams stopped being a problem also adding insulation to the attic and re-venting it, the problem then became the weight of snow on the roof, after you hit 4' you run the risk the roof collapsing, now of course steel roof no leeks, just range vent condensing, that will be fixed in the summer, ah living under the shadow of the snow god is so much goddam fun.
Oh well ordered our seeds for the garden this spring and that is helping to lift the depression.
Bill the demon.
