I used a 1"x 3" for the roost. It's laid flat so they can lay on the feet during the sub-zero nights, preventing frostbite. The biggest regret with my coop is my run having a low ceiling, it is a pain in the @$$ to clean! I was thinking more on fending off our winters, wish it was a walk-in type. I will be adding access points for the lower areas for easier cleaning.
Thanks for sharing this project!
Don't judge each day by the harvest you reap but by the seeds that you plant.