Vent Bathroom Fan Through Roof Or Wall

Leave the drill bit sticking through the roof so you can find the hole.

Vent bathroom fan through roof or wall.

If you want to vent a bathroom fan through an exterior wall you will have to cut a 3 inch or 4 inch hole with a hole saw drill bit. These are usually installed on a pitched roof. Broan sells an inexpensive model which is probably available at any big box store. If your exterior siding is vinyl or fiber cement you will have an easier time cutting the hole.

Choice is go up to roof 5 6 feet or out the present vent 15 18 feet with insulated pipe or shorten the line by going straight to side of home but this requires going up high with latter to drill a new vent hole as tight quarters in attic prevent drilling from attic. From up on the roof use a jigsaw or reciprocating saw to cut a 4 in. Try to keep it close to the fan location. Adding a vent to the roof wiil require a vent kit associated for the type of tiles you have diffence in prices if your not experienced you will need a roofer possibly scaffolding a crawler ladder all which depend on height of the roof.

It is because of this that many builders tend to advise against this method. In order to accomplish this the roof has to have a hole cut in it. Will be usually fed. Start in the attic and drill a hole through the roof in the desired vent location.

The fan will need to be an inline fan with ducting and a grill in the bathroom. Going to the soffet is 12 feet.