Last year, I re-did the garage flat roof. I tend to do this every year, with a fancy acrylic gunge paint. Last year I got white instead of grey, I suspect it may have been cheaper. Anyway, yesterday the weather station on the garage roof showed 40.3c in full sun, and 30.7c in the house. This morning in the house downstairs had remained at 30c, even though outside was 26c early doors. But in the garage was 23.8c. So it's making me wonder if white roofs are the future. The garage usually gets insanely hot in warm weather. Often 30c mid-day.
