I've searched here about insulation, and most were talking about against the cold. I am interested to know about insulating against the heat. Our coop is in the late afternoon/evening sun in the summer. We get HOT here, 100's most of the late summer. I understand that it will keep out some of the heat. But, will it keep out enough? Is insulating it just going to make it take longer for the coop to cool in the evening (holding the heat) once the sun has gone past the mountainside? Does this question make sense? I'm looking for a good shade tree to plant, but even the fastest growing would take years to cover the coop. Yes, funny I'm talking about heat - when I was just digging trenches for the water to drain from my run. Just looking forward to doing more work on the coop this spring.