I need to insulate a small 200 sq/ft crawl space that was built as an addition to the house, which is a full basement. Does anyone have any experience with this? Specifically, I was wondering if using foam insulation would be the way to go here. The joists are 12" apart, not the standard 16", which makes ripping insulation a pain. I don't know what the price is of the spray foam insulation or if it is even something that would be good to use here. Any advice is welcomed.