Sorry for the new thread but I have so many questions going in my original thread I though I should start another one a little more basic.
I am going to start building a plywood smoker. I was thinking of 1/2" plywood inside and outside of a 2x4 framed box. My question is what can I use to insulate between the sheets?
Or what about a rigid foam type? http://www.homedepot.ca/product/foamular-c-300-extruded-polystyrene-rigid-insulation-24-inch-x-96-inch-x-15/925587