We've been frozen here for over a week. A few inches of snow still covers everything including my roof. Temps in the teens overnight. I have a bathroom fan that sucks air from the room, then through a one way checkvalve near the ceiling, up through an insulated duct, then hits the roof vent stub where another one way check valve exists, and then the steam blows out onto the roof and melts snow, makes visible steam etc. We shut off the fan after 30 minutes or so.
The dang check valve on the roof freezes shut overnight so in the morning when I turn the fan on, it is unable to exhaust the moist hot bathroom steam air. My dang mirror fogs up. One time I was standing there when it broke free and began to work but the next day it was frozen shut again.
How do you folks up north deal with this? Is this common? Is my install faulty?
I have a real outside air connection for the stove so house RH is perfect at 30-50%. I do not plan on just letting the steam dissipate into the home, that's why I have the fan.
The dang check valve on the roof freezes shut overnight so in the morning when I turn the fan on, it is unable to exhaust the moist hot bathroom steam air. My dang mirror fogs up. One time I was standing there when it broke free and began to work but the next day it was frozen shut again.
How do you folks up north deal with this? Is this common? Is my install faulty?
I have a real outside air connection for the stove so house RH is perfect at 30-50%. I do not plan on just letting the steam dissipate into the home, that's why I have the fan.