This is what I coated my EPDM roof with last year.
http://www.epdmcoatings.com/videos_play.php?vid=25So far it is holding up very well. I bought two of the 5 gallon pails for my 30' motorhome. I bought one pail, not really knowing how thick to apply it, and how much area it would cover. Then once I had about 1/2 of the front covered, I decided I would much rather spend the time and money to buy a second pail, than to put it on thinner, and try to make do with one pail. I started putting it on really thick, around my leaking skylight, and over all my solar panel mounts.
Good luck,
Fred.
Money can't buy happiness but somehow it's more comfortable to cry in a
Porsche or Country Coach!
If there's a WILL, I want to be in it!
I havn't been everywhere, but it's on my list.
Kangen.com Alkaline waterEscapees.com