But it isolates radiated heat. You’ll have to pump heat built up inside. But also, aluminum radiators pointing upward can help reduce climate temperatures similar to the way trees do. Trees absorb the heat and shade the ground. These would shade and reflect heat creating a cooler area underneath if heat is not actively being generated…no humans or computers or pets. So not a silver bullet but just makes me so puzzled to see people using tar, which pollutes the ground, and steel which perfectly absorbs heat. No, the best solution is to use aluminum.