After reading through the thread and the info. from the Ice Dam link I realized I have a problem.
Last winter (We live in New England) I had a formation of ice/snow built up on the north side of the house. The section that had the build up is on the back of the house where an addition was installed by the previous owners, quite some time ago. The addition is on the back of a cape, off the kitchen. From the upstairs, there is no access to the area above the ceiling of the addition. There is a vent on the side of the addition at the peak.
My thought and reason for the ice/snow build-up is the fact that there is no insulation in the ceiling of the addition, thus the warm air is sitting in the open space above the room. I guess my question(s) would be: 1. How do I tell if there is insulation up there? 2. If it is there and very old, is it doing anything useful? 3. How do I get new insulation up there? I'm thinking that blown in is my only solution!
Sorry to go on so long, I just wanted to paint the whole picture! Any thoughts/suggestions would be greatly appreciated! Thanks everyone! -Steve