Running Dryer Vent Through Attic

Next remove the vent hood retaining screws and pull the vent hood and stub pipe out of the wall.

Running dryer vent through attic. Seal the ceiling penetration so that the duct can expand in length as it heats up during use a standard roof boot such as you d use to flash a vent pipe would work. Not all dryers will allow for this so be sure to check the owners manual to ensure it can be vented in this manner. Start by disconnecting the dryer vent from the vent hood stub pipe. A dryer vent should be vented outside.

Then go outside and remove any siding trim pieces from around the vent hood. If venting outside isn t an option you can vent the dryer out of the attic through the roof using a special roof vent to keep rain out. Continue the ductwork horizontally through the attic to the closest exterior wall. The international residential code allows you to run a dryer vent through the attic but you can t terminate it there.

Vent the dryer with 4 in. In these cases it may be necessary to vent your dryer through the attic. Doing so would fill your attic with warm moist air that could rot the framing. Disconnect the hood from the stub pipe and toss the hood.

Metal duct going vertically from the dryer through the second floor ceiling. The maximum developed length of a clothes dryer exhaust duct shall not exceed 35 feet from the dryer location to the wall or roof termination. When venting dryers for long distances use rigid metal pipe with as few elbows as possible.