I just finished removing some stuff from my attic when my roof was re-roofed with aluminum. Mostly holiday decorations that are only used a small fraction of the year.
Mine gets hot as well - a gable roof with a vent on either end. No eaves venting so air flow is only north-south. The new reflective silver metal should help vs. the old asphalt shingles.
I asked on a different thread about adding a fan on one end controlled by a thermostat but never got a response.
This is the one I was looking at:
Cool Attic CX1500 Gable Mount Power Attic Ventilator with 2.6-Amp 60-Hz Motor and 14-Inch Blade
Thoughts?