That's nice to know...if the convection drives the turbine than it would actually turn
without any wind. I like that 20 deg drop you got, that would be very nice in my
case...although your turbine was probably vented the entire garage, not just the
roof-celing area.

John



"nospambob" wrote in message
...
Convection from hot spaces drive them. Our garage went from 10° above
adjacent patio to 10° below when the turbine was put in during reroof.

On Mon, 23 May 2005 01:52:06 -0700, "jbclem"
wrote:

I have a small old two story house, and the top floor gets very hot during the day.
I'm thinking of installing one or two roof turbines, and also am considering putting
some insulation in above the ceiling, under the roof (I'm sure there isn't any right
now). I'd like to hear some opinions about these ideas, and would appreciate any
other
suggestions. I like the idea of the roof turbines because they don't require
anything
but a little wind to operate.

John