herculiner is made to spray it says it right on the can it is not only for roll on applications.

It can be sprayed with and textured spray gun. You will however need to find the reducer that they call for to use with it. I cant remember the name off the top of my head of it though. it says it in the instructions and on there website as well. SPraying will most likey take far less time but you will lose more in overspray. slan on it killing any grass it gets on. They sell a cheap tetured gun at harbor frieght. I would go with that and them just throw it away when you are done instead of trying to maintain it.