My parents live in northern Wisconsin and called me looking for a solution to a problem related to the vent pipe that sticks through the roof of their two story house that vents the main stack in the house. With recent temperatures at -20 F the vent pipe has clogged due to the formation of ice around the opening of the vent pipe. Their solution was to climb up two stories on a ladder and knock the ice off with a broom handle. I'm hoping to keep my parents around for a while longer and was looking for a better and more permanent solution.
Searching the internet I came up with wrapping the vent pipe with insulation in the attic, purchasing a special heated (expensive) roof vent, or wrapping deicing cable around the roof vent.
Does anyone have any other suggestions, or can you weigh in on the ideas I was able to find so far?
Thank you in advance.