It's also a bad idea to use an existing roof vent for bathroom exhaust. You'll partially block the vent with the duct pipe, reducing the flow of cooling air through your attic. Moreover ...

“Your [expletive] goes straight through this pipe, into my nose,” Brewster said, pointing to the affected pipe in question. The roofer then pretended to gag, signaling that the smell could be ...

Three industry pros, Matthew Labrecque from All Air HVAC, Jay Ryan from Boulanger's Plumbing and ... From the fan, a single exhaust duct exits through the roof. Each bathroom has its own switch ...