I have a very thin layer of concrete over plywood. It means I can clean and scrape (plastic snow shovel) to my heart's content. I was worried about lino rotting.
Have had this set-up in the chicken house for 6 years and it's lasted so far, even with a few ducks in it last winter.
Have had this set-up in the chicken house for 6 years and it's lasted so far, even with a few ducks in it last winter.