there was an earlier thread about using sand on the floor. I'm thinking about trying that. I figure I should be able to get it to about an inch thick. Any thoughts?The shavings will absorb almost all moisture from the droppings. Since you will have a poop board even less droppings will hit the floor than in my coop.
My floors are painted with porch and floor paint. I feel it has better staying power than regular paint. Well over 5 years in my coops and still no flaking, peeling or rotting.
I would not add a plastic liner. Yes moisture can get trapped under that but worse is a home for creepy bugs to hide.