Bathroom Exhaust Fan Roof Vent Leaking

Next make sure you have one of the new roof exhaust vents on the roof and properly sealed.

Bathroom exhaust fan roof vent leaking. 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. 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. I have a bathroom fan that leaks during heavy rains. Vent your bath and kitchen exhaust fans through the roof through a special roof hood.

Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. Many people notice the issue when the bathroom exhaust fan starts dripping on their head as they step out after a shower. The usual cause is condensation inside the duct. Roof vents come in a variety of styles.

I have checked the bathroom fan seal as well and it is not condensation because it is only during heavy rains. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Roof vents serve an important purpose. 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.

Next make sure it is securely fastened on both ends of the pipe. 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. This keeps your attic cooler in the summer and helps extend the life of your roof. I see many questions about leaking bath exhaust vents.

This actually applies to all parts of the house but it s more pronounced in the bathroom where it s already slippery. We explain how to install bathroom exhaust fans or vents the vent ducting the vent termination at the wall soffit or roof vent fan wiring bath vent duct insulation bath vent lengths clearances routing and we answer just about any other bathroom ventilation design or installation question you may have. It seems like it may be coming in through the vent when the rain wind blows sideways during a heavy rain fall. In the rare event that it actually goes to a sidewall then you would contact a handyman or general skilled contractor.

I recommend replacing the vent pipe with insulated vent pipe. Most bath vents for homes are 3.