I have almost completed a stone house for my Casa2G 100. It looks great but I'm needing some advice on the roof. I originally thought I would just put a precast concrete slab on top but I'm finding that there aren't a lot of companies around here that do that. I may have found somebody who can help, but if they don't come through does anybody have any other good ideas about how to roof this thing? It's basically 6 feet wide by 6 feet deep with a masonry chimney 2 feet by 2 feet in the front and center. Thanks!