I have come to the conclusion that I am the only person in the whole wide world that wants to insulate the exterior walls of his home. Because the only answer I have received was from someone thru staff saying thats a good idea do it. Ok, what kind of foam, where do I get it, how much do I use to keep from pushing the brick off the wall. What kind of R-value can I expect,is it worth it the amount of work I will have to do? What will the cost be per sq.ft. Does any one have any ideas?