Install Bathroom Vent Into Attic

Bathroom exhaust fans perform an important function by removing excess moisture from your home.

Install bathroom vent into attic.

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. Each fan vents separately out the roof. It is because of this that many builders tend to advise against this method. Drill a reference hole draw a mark on the bathroom ceiling where you d like to install the vent fan.

Dangers of wet bath exhaust vent air re entering the attic. Install bathroom electrical circuits. Both bathrooms are vented by a single in line fan that has one exhaust vent running through the roof. 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.

So what you want to do is you want to install a duct a vent duct and you can use flex duct for this. Each bathroom has its own exhaust fan. Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic. That will take it from the bath exhaust fan to a discharge point.

Now where the discharge point is is going to be up to you. Remove the grill cover. See details at bathroom vent codes. These are easy to use and can be purchased at most home improvement stores.

In lieu a window 3 feet square or more capable of being opened at least halfway will suffice. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. Use a circuit tester to ensure that the power is turned off. Turn off the breaker box.

A lot of options. Either way the vent will have to go directly to the outside and installed with a vent hood cover. For optimum performance locate it between. Measure the vent fan.

No you cannot vent your bathroom exhaust fan into the attic. One in line centrifugal fan can be mounted in the attic to exhaust the moisture from two bathrooms. Bathroom exhaust fans are not required by most codes. You might have to remove a few screws to get it out.

You should never exhaust the bathroom fan directly into the attic. In order to accomplish this the roof has to have a hole cut in it. This involves running ductwork from the fan usually though an attic and out through the roof. Do not spill bath vent air into the building attic or roof cavity where it will condense on and damage building insulation roof sheathing possibly framing and where it will certainly encourage mold growth.