New Roof = Very Hot Upstairs

[Terri Pour-Rastegar]

Hello everyone! I'm hoping someone here can give me some insight as to why the top living level of this house became very hot since putting on a new roof barely a week ago.

First, here's the house (I hope this works!):
http://www.biggerpockets.com/galleries/show/8062

Next, here's some info on the house:
[ul]

30 years old

about 1800 sf

Tri-level: front of house is 1 level; rear is 2 levels

First (front) level interior ceilings are vaulted, but it is a dropped ceiling (there is about a foot or two of airspace between ceiling [li]joists and rafters). When you're up in the attic above the 2-story part of the house, you can see to the front of the house, through that airspace. I'm telling you this because I am convinced we are getting the airflow we need from the soffit vents. Of course, I could be wrong.

Entire attic (including dead space above vaulted ceiling) is insulated.

There are soffit vents on the front and rear of the house.

Insulation is not blocking vents

We did a tear off of the old shingles, replaced all boots/stacks, and installed new 35-year dimensional shingles (and new felt paper, of course).

We installed ridge vent. Previously, there was no ridge vent; neither were there any gable vents or fans in the attic--just the soffit vents. I thought we'd get some improvement in the amount of heat that stayed trapped in the upper level, but it's incredibly worse.

I had considered installing a turban vent instead of or in addition to the ridge vent, but the folks at the roofing supply place advised me against it. They said you can have too much ventilation.

This is not a good situation, and I could really use some advice. Do I need to add a turban vent? Or what? Was it a mistake to install ridge vent? Help!!!!