I am going to retire my current coop (too small and difficult to clean) and modify a carport into our next coop (obviously I will take all safety precautions into account in this design). There are 3 sections: storage, coop and run. I want to use sand in the coop section but am struggling because I would prefer to not place it directly on the ground. Even though it will be covered and the windows will not allow rain in, water will still be able get the sand wet from below. What flooring suggestions do you have to prevent the sand from sitting directly on the ground? A flat, easy to clean surface is a plus. Coop area is 5’ x 12’. We live in central NC so when it rains, it tends to settle on top of the ground due to the clay-type soil. I want to take precautions to reduce moisture in the coop and still allow it to be easily cleaned. I appreciate any insight!