Bathroom Exhaust Duct In Attic

It may also violate a shingle warranty.

Bathroom exhaust duct in attic. This is much easier to do if you have attic access because if you don t you usually have to remove some ceiling drywall and run the ducts along a joist. This involves running ductwork from the fan usually though an attic and out through the roof. To avoid unnecessary reductions in air movement through the bath vent exhaust system avoid elbows and bends as much as possible. We explain at bathroom ventilation codes specs installers should make the bath vent fan duct run through the attic or any other space as short as possible.

Wall mount fans are mounted on an external wall of a home and are used if there isn t a way to vent through the roof as in the case of a bathroom on the first floor of a home. Bathroom exhaust fans perform an important function by removing excess moisture from your home. The building code requires a bathroom exhaust fan to vent outside the building so installation of a new bathroom fan necessarily involves installation of ductwork. There are wall mount exhaust fans as well as ceiling exhaust fans.

It is because of this that many builders tend to advise against this method. 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. In order to accomplish this the roof has to have a hole cut in it. Ceiling fans vent either into the attic or outside through the roof.

Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. To determine which size fan to buy for your bath multiply the room s square footage by 1 1. The bathroom here is below an accessible attic so tom ran the exhaust duct across the attic and out a gable end. There we also note.