I live in Edmonton Alberta. My problem is the ensuite bathroom that we shower in all the time. The bathrooms have fans vented through the attic and have same vents as shown above. We can not use the ensuite fan in the winter. With the moisture and warm air it melts the snow which freezes, ices up and it backs up. The eavestroughs get filled with ice which backs up from there destroying the shingles and causing leakage in the house. I don't know how to solve this problem. I am wondering if the "CODE" allows the use of a vent pipe that goes through and sits 2 feet above roof similar to the furnace vent?
Bathroom Venting
exhaust-vent
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Best Answer
I can't speak specifically to your code, but I can't imagine a code that would permit a bathroom vent to be vented into the attic space. It is the goal to keep water vapor out of the attic. The pipe should extend through the roof a certain distance (determined by code - maybe 12") above anticipated snow levels.