Concept and design
What is the Heat Island Effect and How to Mitigate it to stay cool?
...reflective paint and light-colored roof coverings. See here for guidance choosing the best roof covering.
Warm air rises, but heat radiates in all directions. So a light-colored reflective roof can reduce roof surface temperatures by 20°C (35°F) or more, which translates into a cooler attic and less heat transferred in...