Shop looks nice. I had the ceilings of my home insulated with a couple inches of closed cell foam early this year and am very happy with it. Because it blocks airflow the results in terms of reduction in my bills was greater than I expected. My HVAC guy found a leak that had probably been there awhile about the same time as I got the foam so it is hard to say exactly how much is each. But I haven't received a cooling bill more than $125 so far. In SC, we use a lot more cooling than heat.