Bathroom Vent Flap Noise From Wind

Often a stiff wind will open vent dampers causing them to periodically clang shut.

Bathroom vent flap noise from wind.

This pressurises the house a bit on one side and depressurises it on the side of the exhaust hood. Although not the cheapest will solve the problem. The vent hood ducts through a rigid or flexible pipe to a cap on the roof or side of your home. Hube nov 14 2007.

This flapping noise comes from the wind blowing from the other side of the house. If you hear a banging noise coming through your bathroom vent when it is windy chances are that the wind is picking up the vent flap and then letting it bang closed. Either apply this thin foam strip to the flap disc or to the edge that the flapper rests on whichever is the easiest. If the noise drives you crazy new spring loaded backdraft dampers 9 to 30 depending on the size should solve the problem.

Sometimes wind and roof vents do not get along well. You are probably better of putting a stick on felt pad on the flap itself so that when it does bang it is more muffled. When the gust of wind stops the velocity of air by the vent reduces to zero and the pressure increases thus suddenly stopping the flow of air and making the flapper close hard enough to be heard. This simulates the on state of the fan.

Those others are roof attic vents. With gusts of wind that causes air to actually move from the house out through this exhaust duct. Easier fix should not interrupt the air flow. This noise can get annoying but there is a remedy for it.

Noise is often a problem unfortunately which is caused by the flaps that close the vent off when the fan is inactive. If this noise is annoying the flaps can be replaced with ones that are electronically controlled. Putting a magnet on may cause recir of the humidity from the vent. There are a couple of things that can help to reduce the problem.

Same effect occurs when the shower curtain is drawn to you in the shower. The flap still moved when the wind is blowing. By replacing the old flap with one that is weighted or has a spring you can stop the wind from opening the vent flap. Another step would be to alter the angle that the vent is installed.