Sledge Concrete Coatings put the coating on the back patio which is probably 1,000 sq feet. They did a very professional job. Helped move the furniture off the patio, did the work, and it looks great. They recently came back to recoat the patio, which has to be done every three years or so. I interacted primarily with the owner and he did a great job. He's a good guy to work with. They do good quality work and are reasonably priced.