I'm thinking about decoupaging my bathroom floor but I don't know which type of overcoat to use. I've been doing lots of research regarding epoxy and polyurethane and the more I read the more confused I get. It's my sons' bathroom, so there will be lots of water that gets on the floor. How much difference is there between epoxy and polyurethane, which is more water proof and which would be easier to use? It's not a very big bathroom (but right now I can't recall the square footage) and I would really like to do this. Any and all advice/help is welcome (just please don't tell me it can't be done!). Thanks!