Return to the Remodeling Forum | Post a Follow-Up

 o
OK to vent range hood over a window?

Posted by dannyjt (My Page) on
Thu, Jan 18, 07 at 9:39

Hi all. I've been slowly redoing our kitchen over for the past few years and I was recently laid off, so the next month is a pretty much total demo of the ceiling and a few walls to run new outlets, recessed lights, and a new range hood. We were originally going to vent the hood to recirculate into the kitchen, as it's on an inside wall,but since I got laid off and decide to do a new ceiling, we're now doing an outside vent. Glad I bought the convertible hood! The hood vents via a 3.25x10 opening. I was going to transition to 7inch round right off the hood, go up 2 feet through a cabinet, then a 90, 10 feet across the ceiling- the joist are lined up perfectly- a straight shot, then vent out the outside wall, through the vinyl siding.

My question is the vent wall cap will be pretty much centered about 18 inches over the kitchen double windows. I live in the Northeast and the only thing I can think may happen is we'll get some condensation on the window in the winter. Any code or common sense not to do this?

Thanks for any input!!! -Dan


Follow-Up Postings:

 o
RE: OK to vent range hood over a window?

Or, lower the profile and use all 3.5x10" all the way.


 o
RE: OK to vent range hood over a window?

Snoonyb- Not sure I understand how that will make a difference- rect or round, it'll still vent over a window.......... Danny


 o
RE: OK to vent range hood over a window?

"lower the profile"
Less of the upper cabinet becomes unusable.
Vent placed higher in the joist bay.
Lower profile eyebrow higher above the window.
Greater horizontal dissipation.


 o
RE: OK to vent range hood over a window?

You better check your local codes. In Maryland you have to be at vent at least 4 feet from any window. Not only will you get condensation on the window, but eventually you'll get a build-up of grease and other cooking residue over time.


 o
RE: OK to vent range hood over a window?

You will be drilling a large hole thru the header over the window and you probably will seriously weaken it. The header may be anything from 2 x 6's to 2x12's. If it is 2 x 12's you might be able to cut a 3 1/2 x 10 hole horizontaly in the center of the 2 x 12's and still have enough strength left to carry the load from the joists. (but that's not certain by any means). No way would I cut a 7" round hole in the header.


 o
RE: OK to vent range hood over a window?

Not all walls are loadbearing.


 o
RE: OK to vent range hood over a window?

No, he won't be cutting into the window header, because he is already in the ceiling joist bays. The header would be below that in the stud wall. He may be cutting through a second floor rim joist, but that's not a problem either. He may have to "periscope" the vent if he's getting an inspection.
Casey


 o
RE: OK to vent range hood over a window?

I've been wondering what the rule is here in BC, if kitchen vents should go out through the wall, or up through the roof (my upstairs bathroom vents through the roof) - if OP was to vent through the roof, it might be a lot simpler, although maybe there's a risk of the grease etc ending up on the roof.


 o
RE: OK to vent range hood over a window?

I had a vent over a door (with a window) in MI (so we would have noticed weather problems like in the NE) and really didn't notice anything odd over the three years we were there. It was inspected by the city, if that means anything. We never thought about any issues and never had any. Of course, you could get interesting smells in summer when you open the windows. (Our window didn't open, except when the door opened.)

Of course, now that you bring it up, it doesn't seem ideal! But we didn't have grease slicks or condensation or anything.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Remodeling Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here