Running Range Hood Ductwork Through Floor Joists Above

And you can t cut holes in the joists for the ductwork either.

Running range hood ductwork through floor joists above.

The ductwork is either 5 or 6 inches in diameter and even though most ceiling joists are 2 x 10s cutting a 5 or 6 inch diameter hole in either of these size joists. The edge of the joist is 1 25 from the exact center of the 8 round duct. If however the joists run parallel to the exterior wall you won t be able to run the ductwork straight out. This project is already over budget and i do not think i have any more to give to stucco repair if the overhang were to be removed.

Mounting the bottom of the hood 6 0 above the floor so that taller individuals aren t constantly bumping their head and exposing the 4 hood extension the remaining mechanics can be concealed within a 12 high cabinet panel or a 16 cabinet panel if an 8 diameter duct is used. Range exhaust ducts can be tricky to run through framing and out through a wall or the roof. The joints are sealed with butyl adhesive aluminum tape. But if i add a 5 booster fan would it be possible to retain proper air flow and route this duct through the joist.

Make sure the studs and bays line up well enough to leave a clear path. The prior hood called for. There was an under cabinet range hood before ducted through to the roof and it went through the drywall at an angle and somehow worked. There is a large attic above.

The home is a daylight ranch so the kitchen is on the second top floor. Viking gas cooktop and i believe it is a 400 cfm hood. We purchased a 36 quot. The duct work was going to run through the joists in the ceiling and out.

X 3 1 4 in. I understand that the maximum size hole i can put through a 9 floor joist is 3.