Install Bathroom Vent Into Attic

Use a circuit tester to ensure that the power is turned off.

Install bathroom vent into attic.

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. A lot of options. See details at bathroom vent codes.

In lieu a window 3 feet square or more capable of being opened at least halfway will suffice. For optimum performance locate it between. That will take it from the bath exhaust fan to a discharge point. One in line centrifugal fan can be mounted in the attic to exhaust the moisture from two bathrooms.

Remove the grill cover. Install bathroom electrical circuits. Measure the vent fan. 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. In order to accomplish this the roof has to have a hole cut in it. Each bathroom has its own exhaust fan. These are easy to use and can be purchased at most home improvement stores.

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. Bathroom exhaust fans perform an important function by removing excess moisture from your home. Remove your old exhaust fan. You should never exhaust the bathroom fan directly into the attic.

Each fan vents separately out the roof. You might have to remove a few screws to get it out. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. Turn off the breaker box.

Bathroom exhaust fans are not required by most codes. No you cannot vent your bathroom exhaust fan 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. Either way the vent will have to go directly to the outside and installed with a vent hood cover.

The attic bathroom will need electricity to supply at least two 20 amp gfci outlets and one switch controlled ceiling light. 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. Both bathrooms are vented by a single in line fan that has one exhaust vent running through the roof.