LdB wrote:

Just curious as to what type of vents you have.

Pretty much exactly like this:

http://www.single-family-home-remode...roof-vents.jpg

It's about 12 inches on a side.

I have 2 roof sections on my house. One is almost square - 35 ft by 30
ft. It's got 4 sides (like a pyramid). If I had a ridge vent, it would
only be about 4 or 5 feet long.

So I have 2 vents (like in the picture) on 2 sides of that roof, and a
powered vent fan on the third side. The fourth side has no vents - you
can see that side from the road (you can't see the other 3 sides).

The powered vent looks like this:

http://www.atticvents.org/wp-content...ttic-Vents.jpg

The other roof section is about 25 feet by 50 feet. It's got 2 sides.
I could put a 25-foot ridge vent on it, but because it's lower it
doesn't get as much direct sun in the afternoon. I also have 2 passive
vents and a powered vent on that roof.

I have been up in the attic when the sun has been shinning all
day and the outside temp are in the high 90's. It's warm up there
but not hot. I would estimate the temp up there to be about 5 deg
above outside.

I have tan or light-brown colored shingles (the lightest color I could
find that matches the brick on my house).

In late july or early august, on a 90 degree day outside with full sun,
with my fan running from dawn til dusk, I can barely keep the
temperature at 125.

Unless you put a temperature sensor positioned just under the decking
(but not touching it) you can't really do a good job estimating
temperature by waving your arm in your attic.

And if you have an attic hatch in your ceiling, and you are estimating
the temperture in the attic by standing on a ladder with your head
poking through the hatch, then you will be fooled by the cooler interior
air flowing past you up through the hatch and into the attic while the
hatch is open. You will not get a true sense of attic temperature that
way.

My neighbor has the regular square vents on his roof. According
to him he has the required amount of vents per code. He does
have well ventilated soffits but his attic is hot.

Code is crap. It doesn't mean additional insulation wasn't added since
the house was built - insulation that is blocking airflow from the
soffits to the attic space.

Codes are well known for skimping out on soffit venting.

You can work in my attic with little discomfort. I wouldn't
even go up into his.

What color are his shingles? What color are yours?

Does he have anything to shield his roof at mid-day? A tree, a
building, some other structure? What about your roof?