Metal Buildings, best company to use, also wood construction ?s

Just a thought for anybody considering having an insulated shop. Put down foam board under the slab before you pour it. The foam board will function as the vapor barrier as well as insulation from the slab to the earth. If you put tubing in the slab for a possible "in floor" radiant heat, this is imperative. The ground under your slab will literally suck the heat down thru the slab.