We have an older existing shed approx. 12 X 20 that we are using as a coop along with a smaller insulated coop. I wanted to take the shelves out but since they are all glued down decided not too. I've made roosts on the shelves. It's a bit of a pain to clean but I'll deal.Sooooo, I had two roo's bach'ing it last winter in the front third with a tarp sealing off the rest and one heat lamp for cold days. They seemed to do fine but I'd like to insulate at least a bit for all my new girls this winter. I will be doing the insulation so I need something easy and fairly quick. I need to be able to do this "a bit here and there" about an hour or two at any given time and get it done by the end of Oct if possible. Another consideration will be getting around the shelves. That means manuvering above and below & they're deep (about 3'). I've been looking and considering reflective insulation both the bubble and closed cell, foam boards, plastic sheeting stapled onto the studs with either syro. peanuts or loose paper fill insulation filling in the gap. I like the reflective insul. but dh said that if it gets dirty (in a chicken coop - go figure) the R value is lost that means covering the stuff. Peanuts would be cheap but I've read that it can give off toxins and isn't fire retardant. What have some of you used and done? Pros & cons?? I'd like to keep the cost down under $200. if possible. Thanks!