Right, but in view of the ever increasing temperatures it seems like a good idea. I've done that to my old workshop, just literally painted the roof white. Dro

Right, but in view of the ever increasing temperatures it seems like a good idea. I've done that to my old workshop, just literally painted the roof white. Dropped ~10 degC during summer, no change in winter. Seems to me that light roofs would help more during summer when there are lots of sunny days than dark roofs during winter when it's mostly cloudy. None of this is counting infrared/UV, but reducing visible radiation is still much better than nothing.