Chuck wrote:
> On 13 Jan 2006 09:10:09 -0800, "Sheldon" > wrote:
>
> >
> >Chuck wrote:
> >> Going to have to install range hood with outside exhaust (through the
> >> roof) this weekend...
> >
> >Why through the roof, why would you want to cut a big hole in your nice
> >brand new roof? If possible you're always better off with a
> >residential exhaust exiting through a side wall with the ductwork
> >aiming downward. My exhaust duct goes up through a kitchen cabinet and
> >into the attic where it travels horizontally about eight feet and exits
> >downward through the soffit... this arrangement also makes it easy for
> >me to maintain the system myself, I can easily remove all the ductwok
> >from inside the attic and take it outside to clean if necessary.
> >Ductwork exiting a peaked roof tends to suffer from down droughts as
> >even a slight breeze is amplified by the venturi effect as it travels
> >over a pitched roof. For such a system to work properly you'd need a
> >vent pipe that extends at least three feet higher than the roof ridge,
> >very ugly. Those flush mount mushroom looking thingies don't work very
> >well on many counts, the exiting exhaust grease will stain the roof
> >too, badly... within a year you'll have a big ugli stain on your nice
> >new roof, and everytime it rains that stain will expand and also run
> >down to the eves... this won't look pretty. You don't want to place
> >any extra holes in a roof, just another place for a leak to develop.
>
> I've not seen the soffit fixture... Did you use a "wall" fixture there
> or do they make one just for exiting soffit?... I prefer this
> option...

It was there when I moved in. The hood is a Sears Kenmore, works very
well, has a dual level lamp and the fan is on an infinite rheostat... I
typically use it within the lowest range. There are aluminum mesh
filters that I send through the dishwasher as needed. I've no idea who
did the duct work or who makes the soffit unit... it's quite possible
the previous owner did that part himself as he owned (still does) a
large machine shop.