As you may have seen from my smokehouse project in the smokehouse build section I'm in the process of building now. From looking at other builds and seiing what others are using I'm wondering about what to use to insulate and finish the inside of my smoker. Is this OK to finish the interior of my smoker with this http://www.lowes.com/pd_12549-99999-LBR12549_4294815995_4294937087_?productId=3176707&Ns=p_product_prd_lis_ord_nbr|0||p_product_qty_sales_dollar|1&pl=1¤tURL=%2Fpl_Hardwood%2BPlywood_4294815995_4294937087_%3FNs%3Dp_product_prd_lis_ord_nbr%7C0%7C%7Cp_product_qty_sales_dollar%7C1&facetInfo= Also as long as the inside walls are sealed up, is it ok to use R13 fiberglass insulation? I already have a couble rolls laying around that were left over from other projects. Just trying to keep cost down but I havn't seen anyone else using this yet so I'm not sure wether its ok.