Temp data FYI
Heat and sun exposure effects on 4" EPS and interior temperature
Curious as to the heat generated by the solar panels in the hot sun vs the insulation effects so I took a few approx measurements. Approx because I used a meat thermometer on the roof, not the epitome of scientific accuracy but it's ballpark. Fenway.
Conditions
3 PM, 15+ mph winds, full, direct, daily sunlight exposure
Outdoor temp in the shade 82f,
Full sun exposure on a white horizontal surface 98f
On roof under solar panel Gap ~105f
Solar panel surface +120f
Interior temp with Cross breeze 83f
Starting point at sunrise 61f exterior, 71f interior.
Appears that the panels have an effect but not more than full daytime solar exposure.