Best Way To Vent Bathroom Fan In Attic

Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof.

Best way to vent bathroom fan in attic.

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. Locate the bath vent fan high in the bathroom high on an exterior wall when you can or on the ceiling where it can pick up steamy air from a bath shower. 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. It is because of this that many builders tend to advise against this method.

Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic. If you vent through the roof condensation will drip back into the interior. 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.

I feel it s best to put bath exhaust fan vents through the roof. Hot air exhaust vents located at the peak of the roof allow hot air to escape. 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. Climb into the attic and clear away any insulation from around the hole.

How to install a bathroom vent fan. Bathroom exhaust fans perform an important function by removing excess moisture from your home. 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. 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.

Either way the vent will have to go directly to the outside and installed with a vent hood cover. 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. Bath vent fan installation building codes bath vent fan troubleshooting bath vent fan repair. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.

Likewise kitchen fans should vent through vents in the roof moving moisture and odors from the interior to the exterior. We explain how to install bathroom exhaust fans or vents the vent ducting. This involves running ductwork from the fan usually though an attic and out through the roof.