The ice dams occur at every inch of the living space, front and rear. The garage has no issues at all. There are portions of the interior that do not have the soffit and it still dams the same.Tom wrote:Can't tell for sure, but from pictures it looks like that soffit is typical through house except for garage.
That long front window is another big issue to contend with this spring. I've uncovered the entire thing by removing all the drywall on the inside. Very interesting to say the least. This 32' window is only mounted to the butt end of the 3/4" redwood siding! The framing, or lack thereof, for the cantilever is also strange. There are no joists at all. It's one big sandwich of 3/4" plywood that is bolted together with 2x on the flat to create a 1.5" void for insulation.
Previous owners have apparently tried to fix the issues here by adding 4x4 posts to support the cantilever, attached 2" rigid foam on the exposed bottom side, and added additional flashing/caulk to the top of the window. The entire thing will be removed in the spring, framed with joists, window replaced and attached to the framing, spray foamed, and new siding. The window will be recessed behind the siding instead of it protruding past the waterfall coming off the roof.