Hi, i have a roofing question for those who know more than I. I live in a climate with hot dry summers, and we dont have a lot of shade. Currently my coop has a roof made of radiant-barrier (foil backed) OSB, then tar paper, then white shingles. This has worked well for the heat. I need to re-do the roof however and also build an exteension onto the coop and am considering changing it and replacing the shingles with white Ondura corrugated roofing panels, still with foil backed OSB under. Do you think this would be hotter, or cooler, than the white asphalt shingles?