They are fitted with a duct that carries air contaminants through pipes to the exterior of the home.
Exhaust hood vents to attic.
Once a proper location for your roof vent is identified and marked drill a hole through the roof from the inside of the attic located in the center between two rafters.
Vent your bath and kitchen exhaust fans through the roof through a special roof hood.
Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot.
The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.
Ducted range hoods are hoods that vent outside your home.
They can go through your cabinetry ceiling or straight through the wall behind the hood.
Your vent hood will have places available for either attic or wall exhaust.
Once you drill the hole you will need to cut an adequately sized opening to fit the range hood vent either square or a round shaped one depending on the design of your.
While this can be done through the ceiling and out through the roof it s best to go through an outside wall because there s less need for waterproofing.
The vent exhausts outside either to an exterior wall or the rooftop.
Cover the hole that you are not using for exhaust and secure the hood to its final positioning to mark the location of the vent duct.
Another consideration is where to vent the hood.