So shockingly my HOA approved me to build a 10x12 metal shed in my backyard. The shed I'm going with is a barn-style 7' roof height (Arrow SR1012) 115' sq ft. This is going to be my brewery. I'm currently doing 3 vessel gravity all-grain brewing but I've started planning a 3 vessel RIMS or HERMS (haven't decided) PLC controlled brewery in the future. I'm sure I'm gonna have tons of questions as this progresses, but the first thing I'm wondering is what kinda floor to build. Concrete is not really an option due to cost and location of the shed. I was planning on building just a plain wood floor made out of treated 4x4s and plywood, but the more I think about it the more I think I'd like to have a water-resistant type floor (epoxy? tile? painted?) with a center drain. My question is what have other people done and what works/doesn't as far as floors go? Thanks in advance for any help.