I also used an elastomeric. I'm pretty sure it was called Rapid Roof, was white in color and pretty thick but, went on very well. I believe it is made in Minnesota or somewhere up in the northern states.
Around areas that need to be strengthened, there is a polyester mesh cloth that can be imbedded in between layers of Rapid Roof. I did my entire roof and it lives in the sunlight of Phoenix, AZ., has been on for many years, now, and still looks great. I did it to prevent water from coming into the framework of the walls of the trailer. I've had that happen to other trailers and it's expensive to repair the wood framework's.
Another thing I did was to paint it on the small part of the vinyl awning that is always exposed to the elements. That has worked very well, also.
I can't find the empty bucket that the Rapid Roof came in. Someone threw it out, I think. Sorry I can't be of more help. It is an industrial quality product.
Joe