Please pay close attention to the posts as they are correct. The brewery flooring is the most important desicion you can make. Epoxy is probably the best thing going. Great washdown and grip.
A Great Company is ICS (Industrial Concrete Services) in Gorham, ME. Talk to Bob LaBlanc and tell him I told you. They are excellant at refinishing surfuces and have a ton of options. I have some pictures of the floor as it was being laid if you want to see them. Remember that new concrete must cure. I had to wait 57 days to apply and remember to make sure they cut the floor for structural swelling!
I like the idea of trench drains on the outer perimeter of the brewhouse. It would save on having to climb behind fermenters to spray the floor down and it would be better to stand in the high spot.
Sebago Brewing Company