We have primed and caulked the entire roof. Then we moved on to painting on this gray rubber-paint, laying mesh on top, and re-coating with the rubber-paint. Now we have to roll on a couple more layers of the gray kind, then we switch to white. After several layers of that, we will have a roof that sheds water very well. An added bonus is the non-toxic quality of this product. If we set up a rain collection system, we don't have to worry about chemical contamination in the rain water! I'm sure that I will prefer to use that water for flushing the toilet anyway.
This is what life looks like from here.