How To Vent Bathroom Exhaust Fan In Attic

Options for venting a bathroom exhaust fan include best to worst.

How to vent bathroom exhaust fan in attic.

The manufacturer will give guidance on the total duct length permitted. Take a look at the installation manual for your fan brand and model. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. Measure the vent fan.

Either way the vent will have to go directly to the outside and installed with a vent hood cover. Drill a reference hole draw a mark on the bathroom ceiling where you d like to install the vent fan. Through the roof or an exterior gable wall. No you cannot vent your bathroom exhaust fan into the attic.

In general you can try venting a bath vent fan down but the combination of down direction elbows and total run length may mean that it s ineffective. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic. You should never exhaust the bathroom fan directly into the attic.

Duct already wrapped in insulation at home centers. You can find 4 in. 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.