We are using an 8'x10' shed that has the 5/8" plywood on the floor for our coop for the 30 girls. I am thinking I am going to use a paint (*oil base? Outdoor type?) on the plywood to help protect it from the urine for future months/years to come. To put a barrier of paint down between the droppings/urine and the wood. Any reason not to? Other suggestions?