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Posted by on August 8, 2007, 3:35 pm
Maybe you exaggerate. What if fan runs as directed by t-stat? And
thus
avoids roasting (literally the past situation in my house) roofing and
framing?
Not to mention keeping things substantially cooler at peak temps
above
ceiling of floor below. Resulting in noticeably lower afternoon temp
rise below
on August afternoons. I'll take that any day.
A cheap and simple seal around door to attic, and your second phobia
is toast.
Not to mention that the floor immediately below is "conditioned" by
being
opened to ambient at night with small fan assist.
J
> You ignore cost of electricty to run the fan and conditioned air being
> pulled out of house.
>
>
>
> >I find it hard to believe that SO much hot air will rise on its own to
> > the ridge vent that the attic will be cool. A fan mounted close to
> > the peak can only move more air.
> > Doesnt seem like there should be controversy over it. Getting a new
> > roof is expensive but how much will adding a ridge vent and and attic
> > fan cost? Not much
>
> > On Aug 7, 11:19 pm, trad...@optonline.net wrote:
> >> On Aug 7, 9:15 pm, big...@backpacker.com wrote:
>
> >> > Add a ridge vent. Dont lose power fan. Anyone who claims they arent
> >> > necessary is foolish.
>
>
> >> > > I'm getting ready to have a new roof installed (tear-off old and
> >> > > replace),
> >> > > and had a question. Right now my roof does not have ridge vents, it
> >> > > does
> >> > > however have several passive vents ("turtle" vents?), plus one atfic
> >> > > fan
> >> > > with a thermostat. The soffets are vented also.
>
> >> > > Should ridge vents be included in the new roof?- Hide quoted text -
>
> >> > - Show quoted text -
>
> >> There are two very different opinions on this and I've yet to see any
> >> actual study that shows which idea is right.
>
> >> 1 - The more ventilation you have, especially static vents, the
> >> better. The idea here is that hot air rises and will make it's way
> >> from the soffits out any top vents, be they ridge, gable, can vents,
> >> etc. So, if you have a gable or other static vent, leave it in place
> >> when adding the ridge vent.
>
> >> 2 - Having a ridge vent, with a gable, can vent, etc will shortcircuit
> >> the air flow, with air coming in the gable, out the ridge, without
> >> properly cooling the attic,
>
> >> I tend to believe in 1 myself. With a power vent placed close to
> >> another vent, like a gable though, I could see some short circuiting
> >> going on there, making the power vent not worth it.
>
> >> If anyone has seen any actual test data, it would be interesting,
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