International mechanical code imc 2009.
Range hood into attic.
If you are adding a new range hood over your stove and plan to vent it out through the roof you will need to get an adequately sized duct that will run all the way up through the ceiling into the attic and all the way up through the rooftop where it will be connected to your roof top vent.
Chapter 5 section 505 1 exception 1.
Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot.
Ducts serving range hoods shall not terminate in an attic or crawl space or areas inside the building.
The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.
Ideally the range hood should be vented to the outside usually through the roof.
The duct serving the hood shall have a smooth interior surface shall be air tight and shall be equipped with a backdraft damper.
Range hoods m1503 1 general.
Measure the range hood to determine where the vent comes out on the range hood and mark it on the wall.
Step 3 install the vent hood.
It is definitely not a good idea to vent a range hood into the attic.
Caulk around the seams between the vent hood and the ceiling.
Cover the exit with a vent cap cover and caulk around the edges to help prevent leaks back into your home.
That s where range hoods or vent hoods come into play.
Ducted range hoods are typically the most effective.
Ducted range hoods also called vented range hoods move the air outside the house through a duct in the wall.
There are actually a lot of interesting questions there vern.
Install the fan the filter and the light kit.
Mstankiewicz marc stankiewicz july 10 2011 12 06am 8.
Step 2 before you begin cutting a large hole into the wall to install the vent first cut a smaller hole to see what s behind the wall.
First remember that there is a lot of grease and moisture in that exhaust just think of how dirty that filter gets.
Connect the vent hood using screws and anchors to ensure a good tight fit.
Range hoods shall discharge to the outdoors through a single wall duct.
So if you vent.
I agree with jonas.
Vern has a range hood on an inside wall and is wondering if he could just use the hollow wall cavity or should he line it and could he just vent into the attic because the attic itself is vented.
No other questions need be asked answered to determine that it is improper to vent the range hood into the attic.