We are in the process of building the coop out of pallets. Trying to keep the cost low as the cost of lumber is crazy lately. My question is this... the slats are as close as we can get them (see pic) hubby thinks we should put a sheet of plywood on the slats, I say no. That the slats are good. He says there will be to much drafts. Anyone make pallet coops? Any suggestions on the build would be greatly appreciated. Also.. coop weights about as much as a small car lol what have you all used on the roof?