, the damp blanket will provide less and fewer r-price since the moisture builds. Pair this with The point that fiberglass insulation isn't going to protect against radiant heat transfer (primary supply of heat movement) and you will see why fiberglass insulation isn't the suggested insulation for pole barns. 5. https://local-metal-roofers45554.dailyblogzz.com/29294052/local-metal-roofing-contractors-an-overview