Installing and maintaining bathroom vents can be a complex undertaking. During roof or vent repairs, a waterproof underlayment known a ice and water shield is installed beneath and around the vents or any roof protrusions to prevent leaks. Bathroom vents also incorporate dampers that open when the bathroom fan is activated and close when it is deactivated. Occasionally, these dampers can temporarily become stuck open, but they typically close eventually. However, if the fan is left on during rainfall, rainwater can enter or be blown into the vent if it is stuck open. This rainwater subsequently flows down the tube and into the fan area, potentially appearing as a roof leak when it is not. In certain instances, it may be necessary to manually ascend onto the roof and tap the damper with a finger to close it. Nevertheless, this usually closes on its own eventually.
Bath Vent with Damper
Bathroom vents generally function correctly. However, occasional problems can arise. One common issue is premature turning off of the fan. When the fan is activated, it draws moist air from the bathroom through the roof vent tube. This moisture can accumulate on the inside of the vent tube. When the fan is turned off too soon, gravity causes the moisture to drip back down through the fan, creating the illusion of a “roof leak.
To address this issue, we charge $225 for manually closing the damper with our fingers. Although this may appear to be an inconvenient technology, it is the sole solution that is effective for all roof bathroom vents, as they all utilize the same damper type of system.
We hope this information is helpful.
Angi – Why Is Water Dripping From My Bathroom Fan?
Bath Vent