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Hi a bit off topic I know but there is a lot of info and experience in a lot of topics available . I have a typical sheet metal shed and want to cool it down and wonder what will be better.
1) Make a frame and use shade cloth (as used to shade plants )above metal roof . The idea is to cut down on the heat touching the metal roof and the being transferred into my space.
2) Insulate inside leaving airspace and install thermo reflective insulation and try to stop the heat transfer from the hot metal roof being transferred into my space.

Any experience or study done ??

Thanks getting ready for summer in Australia.