I have a bathroom fan that leaks during heavy rains.
Bathroom vent leaking water when it rains.
This is no fancy over the stove exhaust system just a round circular fan that sits flush up against the ceiling and vents to the roof.
Another potential source is a buildup of ice on the roof in winter which may melt in reaction to the warm air from the bathroom.
It this is the case you need to create a breathable shield to slow the driving rain drops while still allowing air flow.
We have inspected the attic and there is no rotting wood and we cannot figure out how to stop the problem.
And on occasion a hard driving rain with whipping wind will cause roof vents to leak water.
Bathroom exhaust fan leaking water when it rains.
When it rains water is getting through the cover and the water is traveling down the vent hose and then it is exiting from your bathroom fan onto the floor.
You look up half expecting to see the shower head somewhat extended only to see the ceiling vent.
In this next picture we can see the care the installer took to get the same type of cap raised high enough above the roof surface to prevent leaking.
What s required to fix it depends on what the problem is.
During the last storm it even started leaking through the ceiling light which is about 4 feet away from the exhaust fan on the ceiling.
It could be as simple as pulling some debris out of the vent or caulking or more complicated.
You re now at a loss as to why water came out of there.
A drop of water falls on your head.
It seems like it may be coming in through the vent when the rain wind blows sideways during a heavy rain fall.
Whether wind driven rain will be a problem remains to be seen.
In this article we ll discuss in full everything related to the issue of water dripping from bathroom exhaust fan or ceiling vent when it rains.
The first steps would be looking at the vent up close and looking inside the bathroom fan housing during a rain to see where the water is actually coming from.
We had some water leaking onto the kitchen stove from the exhaust fan above it during the last couple of heavy rains.
It s also possible that the vapor barrier installed in the roof is developing condensation as a result of poor insulation and the water is pooling.
The most common reason a bathroom exhaust fan leaks when it rains is because the bath vent hose is in a vertical slope and exhausts on top of the roof.
Vent cap with a proper stand off from the roof.
It is not likely that water will ever get high enough to flood this vent.
It could be as simple as pulling some debris out of the vent or caulking or more complicated.
I have checked the bathroom fan seal as well and it is not condensation because it is only during heavy rains.
Besides the roof it is also possible though unlikely that your bathroom fan vent goes to the exterior vertical wall and it may have just enough slope that water is still dripping.
