This has probably covered but like a lot of guys I have a perfectly good flishanty non insulated , I do heating and cooling and we use a insulation to wrap duct in that is flexible shiny bubble wrap looking insulation. Wonder n thoughts of putting a layer on top between tent material and support bars if this wood help. It would be reflective and keep heat from going up the top. Also make it brighter inside usually use a later fr light and heat. If too bright I could sew a black sheat to insulation. Just would like some opinions on this. Never been real cold in shanty but don't relly want to buy another when there is nothing wrong with one I have clam big mouth. Thanks for any input