Sounds like a good product, but I wonder if it has been tested on a true beachfront masonry structure. We tried a top of the line Dunn Edwards product with a great warranty that was recommended by a DE salesman. The areas that were "beach front" blistered within a year. They decided that while it was a great product it was not suited for our application because it had too much elastomeric qualities. We switched to a cheaper DE product and have had no further problems. Not saying this will be the case with Coolwall, but be careful and do your homework. If you use it, please let us know how it's holding up. We're always looking for better paint products.
