Bathroom Exhaust Fan Roof Vent Leaking

The usual cause is condensation inside the duct.

Bathroom exhaust fan roof vent leaking.

As mentioned at the beginning of this article having a leaking exhaust fan or ceiling vent in your bathroom makes everyone at risk of slipping or falling. If the bathroom vent is leaking when it rains then you should be contacting a roofer to fix or replace the vent hood on the roof. I see many questions about leaking bath exhaust vents. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.

Many people notice the issue when the bathroom exhaust fan starts dripping on their head as they step out after a shower. Next make sure it is securely fastened on both ends of the pipe. Roof vents come in a variety of styles. In the rare event that it actually goes to a sidewall then you would contact a handyman or general skilled contractor.

Next make sure you have one of the new roof exhaust vents on the roof and properly sealed. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. In winter when the warm moist air from the bathroom hits cool air in the attic or outdoors it condenses sending drips back down the ductwork. Most bath vents for homes are 3.

Vent your bath and kitchen exhaust fans through the roof through a special roof hood. This actually applies to all parts of the house but it s more pronounced in the bathroom where it s already slippery. If bath fan ducting isn t properly insulated the moist air from your house will condense inside the duct. The first step is to head to the attic.

Although roof vents are necessary and create a balance between air exhaust and intake the water tight seals around roof vents can get damaged over time by excessive heat cold or wind. They allow air circulation under your roof and allow air inside your attic to circulate with the air outside your attic. Roof vents serve an important purpose. I recommend replacing the vent pipe with insulated vent pipe.

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.