Best Way To Vent Bathroom Fan In Attic

Bathroom vent exhausting in attic space.

Best way to vent bathroom fan in attic.

How to install a bathroom vent fan. I feel it s best to put bath exhaust fan vents through the roof. If you vent through a soffit where attic vents are often located the moisture will get sucked back up into the attic or roof venting. We explain how to install bathroom exhaust fans or vents the vent ducting.

I recommend that my clients vent their bath fans out a gable wall if at all possible when not using an hrv or erv that is. The correct way to vent a bathroom fan through an attic is to terminate the vent either to the roof or to the gable wall. Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic. This article series explains why bathroom vent fans are needed and describes good bath vent fan choices necessary fan capacity and good bath vent fan and vent duct installation details.

It is because of this that many builders tend to advise against this method. Draw a mark on the bathroom ceiling where you d like to install the vent fan. Either way the vent will have to go directly to the outside and installed with a vent hood cover. Climb into the attic and clear away any insulation from around the hole.

In order to accomplish this the roof has to have a hole cut in it. When venting a bathroom exhaust fan make sure to vent the air to the outside rather than into your attic where it can cause mold and mildew to form. This involves running ductwork from the fan usually though an attic and out through the roof. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof.

Likewise kitchen fans should vent through vents in the roof moving moisture and odors from the interior to the exterior. These stem vents should be properly connected to the bathroom ducts to ensure that moisture is traveling to the exterior not the attic space. For optimum performance locate it between the shower and the toilet. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.

The moist air that s belched out by the fan can be sucked right up into the open soffit vents and be drawn into your attic. Hot air exhaust vents located at the peak of the roof allow hot air to escape. Bathroom exhaust fans perform an important function by removing excess moisture from your home.