Fast set elastomerics work great and provide a pure monolithic membrane. We used a 2 component machine from a company in Ohio that was very cost effective and put it down fast. The real neat part is you can walk on this stuff in minutes compared to other types and weather isnt a real issue, providing the surface is dry, due to it curing exothermicly; chemical reaction. The coating has aluminum powder in it and reflects UV rays to the point of 30-40 dgrees cooler than any other roof product weve seen.
Some people don't care for the two component machines but we had no issues. This one project paid for the rig and still had steak for dinner