Posted by daestrom on July 2, 2008, 1:07 am
I don't think there's any 'magic' number. Obviously during A/C season it
would be best to run 'as low as reasonably achievable'.
Since you already mentioned a silver roof, I won't bother talking about
using lighter colors.
But you might look into some ventilation. In the great-white north we like
to have well ventilated attics to avoid ice-dams and related damage.
Soffitt (sp) vents under the eaves and ridge vents along with vents at the
peaks of gables will allow natural circulation of air to help keep
I'm in NY and I often see 110F in the attic this time of year.
Posted by ABLE_1 on July 2, 2008, 9:45 pm
For all practical purposes each attic temp is going to be different for a
number of reasons. Roof pitch - East West orientation - Ventilation - Etc.
Having had to work in attics during the summer in the northeast I would
venture to say that on a scale of 1 to 10 most attics are in the 13 + +
If you need a closer approximate than that, then stick a thermometer up
there near the hatch and check it at 7am - Noon - 5pm Add them together and
divide by 3. Then subtract the daily average temps from that and you should
get a good Delta-T.
Please publish the results here.
BTW anything above 84F makes me
sweat.......................................... a lot!!!!!!
Posted by tommy.coates on July 3, 2008, 8:11 am
Thanks Les I'll get that average today. I installed a max-min dig
therm. a couple of days ago in the attic. 7-2-08 max attic reading was
92 degrees, with the outside temp at my weather station max high was
Posted by Tommy on July 3, 2008, 10:06 pm
Today was a mixture of sun, clouds, and rain. Today average attic temp
was 78 degrees and the outside average was 77 at the averaged times of
7:00am 12:00pm, and 5:00pm. Looks lke the forcast showing chances of
rain the next few days. I'll wait for a good week of hot summer days
were the house is soaking in the sun.
Posted by RicodJour on July 4, 2008, 1:38 pm
On Jul 3, 6:06 pm, jeeppin...@webtv.net (Tommy) wrote:
Your attic temperatures are lower than I would have expected, so
something is working. Other than the metal roof, what's the rest of
the construction/insulation like?