I built a small raised coop that I plan to brood in with the mama heating pad method. It has plenty of hardware cloth windows for future ventilation - I planned it based on Prince T Woods fresh air poultry houses. I’m going to cover the lower openings until the chicks are feathered out and ready for more of the great outdoors. I’ve planned pine shavings for the litter but am worried that I need to insulate the floor somehow? It’s about 18” off the ground. I’ll try to post a picture, but as I said...newbie.