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Twisted Minds Custom Designs To be able to vent you are going to have to have the flue extension. There are decorative ways you can either camoflauge this or use it as a design focal point. Copper or other metal hoods suspended from chains give an industrial utilitarian type feel, boxing it in with drywall would give a more traditional vibe. Be sure to contact a structural engineer to make sure you can alter your ceiling to vault it. Depending on the style of your house, options will vary. Could you supply some pics, and descriptions of your style preferences?

Custom Home Planning Center commercial range down draft is best.
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Ironwood Builders Well, you do have a dilemma. What you are saying is that the two available methods for venting cooking gases and moisture are unacceptable...and you want an alternative. Sorry, but we have just the two to offer right now. Twisted Minds is absolutely correct in suggesting that a little more research (if not already done) happen in order to turn your flat ceilings into a cathedral ceiling. Structural integrity of the roof "dynamic triangle" needs to be maintained, if it is trusses, you'll need to tear of the existing superstructure and install newly engineered and built trusses, with an engineered tie in to the existing. Collar ties and a conventional stick framed roof provide alternatives but a discussion with a local pro (look them up here on Houzz) will determine the course of action. Take a look at the photo below, This hood, available from Zephyr, is a high tech low impact type of installation for an overhead hood.

Custom Home Planning Center You may not be satisfied with your current down draft, but with a commercial downdraft fan mounted on an exterior wall and it substantially higher CFM, I think your missing a solution. I've a 48" viking cook top with a 24" griddle and do not have a problem. If sound is a problem with your current downdraft the exterior mount should deal with it. If you have a jenair type flat down draft as oposed to high back splash downdraft I could see why your current set up is not cutting it.

If you do go vertical I would recommend the roof top high CFM fan unit.

heinz9 I'm trying to get away from using a down draft venting system because it's not very efficient for my high BTU range. The range manufacturer recommends a hood rated at a minimum of 600 cfm. The best option for it would be a vent hood which was the configuration I had at my old house and it worked well together there. My current kitchen layout is a U-shape and this design works very well for me and the space I have. One leg of the U-shape is a peninsula and that is where the current down drafted range sits. I plan to install the range from my old house in this space and installing a new island vent hood over it. The issue or concern I have is how this will look on a vaulted ceiling with a 7' ss flue connected to the hood. I would want as little obstruction of view over the peninsula because it looks into the family room area. I've seen glass island hoods that are thin and less bulky but I do not want the modern or sleek look they provide with my traditional face frame cabinets and saltillo tile floor. Any ideas or suggestions would help Thanks for the ideas so far.

Custom Home Planning Center the commercial downdrafts are 1200 cfm and up

heinz9 I think you're on to something there with a commercial downdraft. 1200 cfm should move a lot of air and make up for lack of efficiency. As far as my ceilings go I was planning on using two sistered 3 1/2" x 18" LVL's to span the almost 28' opening. The attic and the whole house for that matter is stick framed with a 5/12 roof pitch. On each end of the beams I'm using recessed steel columns that are supported by at least a 2'x2' footing (I haven't calculated loads for those yet). I was thinking of installing some collars on the vaulted ceiling side of the beam every 8' and wrapping them with 1x8 rough sawn cedar or pine. The bottom of the LVL beam would be approximately 96 1/2" above the floor and plan on using 16" o.c. 2x4 framing between the LVL and ridge board. On one side of the LVL beam the ceiling would remain 8' and on the kitchen and family room side the peak of the vault would be approximately 13'. On the side of the beam with the vaulted ceiling I'm planning on 2x10 rafters sistered on to the original 2x6 rafters. I would double the 2x10's rafters on both sides of the 4 skylights I want to install. The kitchen skylight closest to the vent hood would be operational to allow for make-up air and also allow for additional gases and moisture to escape through convection. I was originally thinking of putting a large skylight over the peninsula to allow convection to take its natural course and remove cooking fumes. I'm not sure though this would work very well on cold windy days. At this point in time I'm bouncing ideas around to weigh my options. Thanks a lot for your time and ideals. I appreciate them immensely.

Rustico Tile and Stone Check out Cantera Architectural Stone, which is a natural stone that is very similar to cast stone and cast limestone. It is exclusively found in and imported from numerous regions of Mexico and Central America. It is a soft and highly durable material that can be hand carved into literally anything one can imagine. It is porous and light weight, which means it is easy to manipulate and maneuver, making it easy to ship anywhere in the world. Visit us at www.saltillotileconnection.com/cantera for more information and to request a quote! We have done several stone range hoods and a Copper/Cantera combination could be a good idea.