Run Bathroom Duct Through Roof Or Underhang

Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof.

Run bathroom duct through roof or underhang.

Fantec makes some nice remote fan systems virtually silent in operation and you only need one fan for the 2 or more bathrooms. 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. Each fan vents separately out the roof.

Hot air likes to rise venting through the roof is the shortest path so it has the least possibility of condensation and shorter runs are more efficient. In order to accomplish this the roof has to have a hole cut in it. The 2 pipes one a 4 master and the other a 3 2nd do not go through the ceiling but into a common box that goes through the roof. Bathroom exhaust venting does not have to exit up through the roof and in fact that s not necessarily even the best termination.

Start in the attic and drill a hole through the roof in the desired vent location. This article describes the recommended slope direction on bath exhaust fan ducts to avoid icing and related building leaks. The 2nd bathroom vent drips on the floor and is ruining the ceiling. The master bathroom and the 2nd bathroom vent through the roof and through the same opening.

And while both a roof vent and an overhang vent perform this task there is one big difference. Whether it s new construction or a remodel a bathroom vent should always vent through the roof instead of an eave overhang or soffit. Although most bathroom vent fans are quite simple some have bells and whistles such as motion sensors that switch the. One in line centrifugal fan can be mounted in the attic to exhaust the moisture from two bathrooms.

Each bathroom has its own exhaust fan. Both bathrooms are vented by a single in line fan that has one exhaust vent running through the roof. And of course a bathroom with a window doesn t require an exhaust vent. This involves running ductwork from the fan usually though an attic and out through the roof.

More often bathroom fans vent out through a duct running up to the roof. An exhaust vent fan can exhaust out through a gable end side wall or out through a soffit overhang. The point of a bathroom exhaust vent or any vent really is to remove hot moist air from the house. Bath vent fan slope.

Leave the drill bit sticking through the roof so you can find the hole. It is because of this that many builders tend to advise against this method.