I'm in the process of making a smoke house; separate fire box from the house. The bottom 2 feet to the house are stone and the top will be wood (not sure what type). Can the outside of the smokehouse (wood top) be painted??? Some books say don't put anything on the wood, some books say don't put an oil but a paint is ok, and other books don't talk about it. The pics on the internet show some painted and some left raw wood. Not sure what to do; thought I'd ask some experienced smoke house builders. Appreciate any advice.