We have a metal barn. No insulation or heating yet. 20x36. This is the second floor. This is an example of the type of building. http://www.americanoutbackbuildings.com/Assets/ConstructionPages/pages/Construction29.htm The end walls are wood and the roof metal. We are going to insulate and heat this and are looking for your suggestions. There is no roof decking under the metal and the floor is wood decking.

I should note that my boss just bought two lumber yards so, I can buy insulation at a very good price. spray foam insulation is not something I could get a discount on.