Spanish Mackerel are a plentiful fun to catch fish. I've never targeted them because I don't care to eat them. That is, until a neighbor gave me some fresh smoked... WONDERFUL
The $1000 electric fish smokers are just an insulated stainless steel box. I have the stainless. The electric is a piece of cake. I'd like to bond a layer of something and then a layer of redwood to the outside of the smoker to provide the insulation and make the unit look nice enough that my landlord would like to keep it for me.
What would be a good insulating material (I've seen a hard masonry type sheetrock, shame they've never found another asbestos) and how would I bond it all together?