Range hoods are typically vented using a special duct work that runs through a roof and less often through an exterior wall of your house.
Range hood vent roof or wall.
Straight up to roof or vent out of wall.
The range hood vent uses ducts that are made to run in the roof or walls.
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It is considered a little more expensive to vent your range hood through the roof than through the wall.
We have 1 floor ranch.
The duct work is usually concealed within the walls and it is really important to make everything air and water tight.
This is why you need to install the range hood vent properly or you call a roofing contractor.