Bathroom Fan Roof Vent Leaking. Roof leaks around vent pipes is relatively common. When the fan runs this moisture is drawn out with the air without causing any problems. A roof that leaks around a vent pipe is a common cause of small water stains on a ceiling or water leaking into a home.
Most roof caps for bath fan exhausts have a light aluminum backdraft damper which rests on a sealant strip which is basically a foam piece of weatherstripping. And on occasion a hard driving rain with whipping wind will cause roof vents to leak water.
The leaking may first be seen in the attic but if you don t catch it right away you may see water coming into the house dripping on the floor.
If bath fan ducting isn t properly insulated the moist air from your house will condense inside the duct. This sealant strip is installed to keep cold air from coming in and according to a broan customer service rep it also helps to prevent unbearable metal on metal chatter. You can expect water to come out of the shower or the faucet. A roof that leaks around a vent pipe is a common cause of small water stains on a ceiling or water leaking into a home.
