Bathroom Vent Through Attic

Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out.

Bathroom vent through attic. In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover. Because the fan is in the attic you ll hardly hear it. If you vent the bathroom exhaust fan to close to the soffit vents which are vented plates under your homes outer edge and roof your home the air can be sucked right back into the attic from the soffit. A single exhaust exits through the roof figure a.

The master bathroom and the 2nd bathroom vent through the roof and through the same opening. Either way the vent will have to go directly to the outside and installed with a vent hood cover. A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan. The correct way to vent a bathroom fan through an attic is to terminate the vent either to the roof or to the gable wall.

Vent your bath and kitchen exhaust fans through the roof through a special roof hood. You mount a switch in each bathroom. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. 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.

The vent hood will have a little flap that opens when air is blowing through the vent but at other times it will remain closed. This system is quiet too. This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.

The 2nd bathroom vent drips on the floor and is ruining the ceiling.