Has anyone tried using attic foil sort of like a sun shade? I have a whole roll of it that didn't quite make it to my attic yet and thought about trying it out. You can check it out at atticfoil.com to see what I mean. I cut a section off to try it out but haven't got around to it yet. I have the stuff that's perforated so it is not a vapor barrier which might work well. Just thought I would check on here to see if someone has tried it yet.