Install Bathroom Vent Into Attic

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

Install bathroom vent into attic.

Install bathroom electrical circuits. One in line centrifugal fan can be mounted in the attic to exhaust the moisture from two bathrooms. Measure the vent fan. See details at bathroom vent codes.

You should never exhaust the bathroom fan directly into the attic. So what you want to do is you want to install a duct a vent duct and you can use flex duct for this. 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. This involves running ductwork from the fan usually though an attic and out through the roof.

Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. Each bathroom has its own exhaust fan. 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. A lot of options.

You might have to remove a few screws to get it out. Each fan vents separately out the roof. Remove your old exhaust fan. That will take it from the bath exhaust fan to a discharge point.

For optimum performance locate it between. The attic bathroom will need electricity to supply at least two 20 amp gfci outlets and one switch controlled ceiling light. These are easy to use and can be purchased at most home improvement stores. Turn off the breaker box.

Now where the discharge point is is going to be up to you. Remove the grill cover. In order to accomplish this the roof has to have a hole cut in it. It is because of this that many builders tend to advise against this method.

Both bathrooms are vented by a single in line fan that has one exhaust vent running through the roof. In lieu a window 3 feet square or more capable of being opened at least halfway will suffice. Bathroom exhaust fans are not required by most codes. Bathroom exhaust fans perform an important function by removing excess moisture from your home.

Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic. Dangers of wet bath exhaust vent air re entering the attic. Use a circuit tester to ensure that the power is turned off. No you cannot vent your bathroom exhaust fan into the attic.