I love this stuff! I did 2 coats on the coop floor and up side walls a few inches. It is now about 12 years old and still looks good.That is BlackJack 57, it is a roofing product that is often touted on this forum.
My experience with it - excellent after 5+ years.
I would definately use it again.
Not really any more messy than paint. I used an mixer attached to a cordless drill to stir it well. Put it on with a fluffy paint roller. Let dry overnight and did the 2nd coat the next morning. Very little odor, too.Sounds messy