Heres a prime example of a company that put a marine label on the roof coating im using on my boat. Notice it say E.P.D.M chips in it? what do you think rubber membrane is on flat roofs? you got it EPDM. Same $hit just in a different sack.
http://www.tuffcoat.net/wordpress/ and did i mention the stuff im using is fire resistant, so if she catches fire were good!!!!! lol!!!