Snow has been piling up on roofs without any thaws in between storms. These are creating severe ice dams with leaks and stressing rafters and trusses to the maximum mimicking the winter of 2011 http://boston.cbslocal.com/
We at http://www.guttercleaning.name/
If you cannot get a licensed/insured professional to your home, there are a couple of things a homeowner can do.
Buy a roof rake. Now! I have always wondered what they did with last years purchase, or the year before that.
A homeowner can then clear at least 3' of snow from the edge of the roof. The purpose of this exercise is to allow the ice that forms near the edge to melt and drain once the temperature rises. You can view an ice dam cross section on our website.
Use good judgment. Getting on a ladder in the snow should only be done by those who have the experience of being on ladders every day.