I made an album of my sunroom project if you'd like to see it.
I had an existing foundation from a ....bomb shelter? But, the roof leaked and needed replacing. When I looked into the cost of replacing the concrete slab roof, with the amount of rebar it would need to keep that roof safe, it wasn't much expensive to build a whole room on top of it.
http://www.yorkietalk.com/forums/alb...?albumid=15395