My husband and I will be building our coop in the next couple weeks, we get our chicks march 11. My husband and my father both think that for our coop (which will be a 4x4 cube style with a slanted, corrugated roof) we should use tar paper or felt roofing type material on the inside walls. We will be framing it with 2x4s, the siding will be repurposed fence boards. Will tar paper inside be ok or will the chickens peck at it and tear it? We plan to use linoleum on the floor and a 5x15x6H dog run for the run. Any thoughts or input on any of this would be greatly appreciated.