I'm going to start converting my shed to a coop and covered run tomorrow. Coup 10x12 and run 12x12. The shed will be insulated and drywalled and has two windows, a vent on one wall and a top roof vent. The floor is concrete. I will be putting 2x4 wire under the chainlink to prevent digging in by coyotes and the same over the top of the run. I do have a few questions though. 1. What is best to put on the inside floor? 2. Do they need a light on all the time? 3. Has anyone had a fire problem with heat lamps using certain flooring materials? Thanks!