How To Connect Bathroom Fan To Roof Vent

The master bathroom and the 2nd bathroom vent through the roof and through the same opening.

How to connect bathroom fan to roof vent.

Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. There aren t many options for routing an exhaust fan to the outside of the house. The above scenario will work provided the following. In this video this old house general contractor tom silva shows how to properly install a roof mounted bath fan vent.

With that in mind if they were both plumbed into one vent it should be no problem right. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. When inline fan is in operation air from both washrooms will vent out. Both washrooms must have nearly identical square.

The 2nd bathroom vent drips on the floor and is ruining the ceiling. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. A 3 or 4 inch duct connects to the outlet on the fan housing and runs to a side wall or to the roof and connects to a vent cap that allows the. No matter the location of the bathroom you can vent the exhaust fan through the wall.

Ductwork is what will connect the fan to the outside. The fans would be located within 5 6 feet of each other and could easily exit the roof at the same point. 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. Then add an inline fan to the remaining leg of the y adapter and run ducting to vent outside.

You can replace the fan opening with a grill for each washroom. I would recommend installing a bath fan with a new vent that goes to the gable wall roof or even the soffit last choice. If i remember correctly fans all have a check valve or flapper preventing back flow and drafting back into the room. There are really only three venting options.

The bathroom exhaust ventilation fan disperses air through an opening in the fan housing which is usually 3 inches in diameter and ideally faces in the direction of the ventilation system outlet.