Bathroom Exhaust Fan Roof Vent Leaking

Water stains on the ceiling around your bath fan may indicate a leak coming from the vent cap on your roof but condensation is the more likely culprit.

Bathroom exhaust fan roof vent leaking.

While this doesn t indicate that your roof is leaking it does potentially indicate that your exhaust fan isn t vented correctly. I see many questions about leaking bath exhaust vents. One of the most common roof repair situations we see are leaks around vent pipes. Also known as plumbing jacks or roof jacks roof vents are the pipes that protrude out and let the gases in your kitchen and bathroom escape.

However you shouldn t expect for it to come out of your leaking bathroom exhaust fan or ceiling vent. Next make sure it is securely fastened on both ends of the pipe. When it does then there s obviously something wrong. If bath fan ducting isn t properly insulated the moist air from your house will condense inside the duct.

The tubing or the ducting of the exhaust fan should be insulated and vented to the outside. Most bath vents for homes are 3. You step out of the shower and then there it goes. Pay close attention to check whether there is insulation around the duct.

Vent pipe leaks during heavy rain can occur if you have cracks in your vent pipe boot or flashing. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. I recommend replacing the vent pipe with insulated vent pipe. So you re taking a hot shower because you want this stormy night to be as relaxing as it can be.

Check the damper at the fan. The first step is to head to the attic. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. These boots vary in quality flexibility and longevity.

When your roof was installed each vent pipe received a flexible boot to seal water around the round surface of the vent pipe. If not this is the problem and you can solve it insulating around the duct.