Re: Roof vent

On Mon, 17 Apr 2006 11:38:24 GMT, "Grumman-581"
<grumman581@DIE-SPAMMER-SCUM@gmail.com> wrote:

<crossposting-snipped>

In alt.home.repair, <rob> wrote in message
news:0it6429dpr1m8u345jg9gjhc942o8igfsc@xxxxxxxxxx
Agreed. I've had several homes and I can't say they worked that great
either. I won't say they didn't work but I can say it still got hot
up there. Nowadays, on the gulf coast (Texas), you see new home
construction using ridge vents and soffit vents instead of the
turbines.

I don't think that the spinning of the turbines provides much more cooling
than just having a hole in your roof of the same size... They probably make
a difference compared to not having any opening in the roof... The ridge and
soffit vents rely on hot air rising to reduce the amount of heat in the
attic... It worked pretty good on my last house... It was still warm up
there, but not quite a warm as a previous house that relied on a electrical
vent fan... Since the ridge vents are at the highest point in your roof,
they'll probably let more air out than some vent that is stuck halfway down
your roof face... My last house had significantly more trees around it than
the previous one did, so it's not a very good comparison...

I was only going to reply to the previous post, but I shoudl have read
the others first.

I have a very good comparison, because my house had ridge and soffitt
vents, full width and the soffitts were not just a few holes in vinyl
siding soffitts, but window screen 4 inches wide the whole width of
the house.

Still intolerable in the attic, until the roof fan went in. Then 10
degrees cooler in the 2nd fllor and maybe 20 to 40 degrees cooler in
the attic.


Moderately dark brown shingles. Changed to moderately light brown
shingles a couple years ago. That might mean I use the fan less, but
it doesn't affect the temperature in my attic in the summer, except
maybe before 10AM because the fan takes care of that after the fan
goes on.


I heard of a guy once who installed a sprinkler system on his roof to help
cool his house... It was probably most efficient when he set the water flow
such that the water would evaporate, but not necessarily drip off the house
(latent heat of vaporization), but I think he had it tied in with his
gutters so that he could recover the water and reuse it... With the calcium
in Houston water, I suspect that you would have noticeable mineral stains on
your roof within a year...

Maybe so. But, if he was recovering the water with his gutters, and
he had a cistern, maybe he used mostly rain water.

.

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