i recently painted my aluminum roof on my pup with Elastomeric paint. I’m noticing that it gets dirty very easily. It has a dull finish to it so nothing sheds off of it. I basically barely touched it with not crazy dirty hands but it left a very clear hand print. When I tried to clean it off it did not clean up well at all. Am I missing something here. Am I supposed to put yet another coating on it like a finish or am I stuck with this? Btw it is rustolium 67% Elastomeric roof coating. Any others here experience the same?