Run Bathroom Duct Through Roof Or Underhang

More often bathroom fans vent out through a duct running up to the roof.

Run bathroom duct through roof or underhang.

And while both a roof vent and an overhang vent perform this task there is one big difference. Attics can be problematic when insulation is located in the attic floor rather than in the rafter bays or better yet outside the roof sheathing. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. And of course a bathroom with a window doesn t require an exhaust vent.

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. The 2nd bathroom vent drips on the floor and is ruining the ceiling. This article series explains how to install bathroom exhaust fans or vents the vent ducting the vent termination at the wall soffit or roof vent fan wiring bath vent duct insulation bath vent lengths clearances routing and we answer just.

Leave the drill bit sticking through the roof so you can find the hole. This article describes the recommended slope direction on bath exhaust fan ducts to avoid icing and related building leaks. In order to accomplish this the roof has to have a hole cut in it. The point of a bathroom exhaust vent or any vent really is to remove hot moist air from the house.

Bath vent fan slope. The master bathroom and the 2nd bathroom vent through the roof and through the same opening. Whether it s new construction or a remodel a bathroom vent should always vent through the roof instead of an eave overhang or soffit. Start in the attic and drill a hole through the roof in the desired vent location.

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. This involves running ductwork from the fan usually though an attic and out through the roof. 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.

Although most bathroom vent fans are quite simple some have bells and whistles such as motion sensors that switch the. Both bathrooms are vented by a single in line fan that has one exhaust vent running through 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. It is because of this that many builders tend to advise against this method.

Bathroom exhaust venting does not have to exit up through the roof and in fact that s not necessarily even the best termination. Each fan vents separately out the roof.