I don't want to replace it because the size is really good and enough room for everyone to be comfortable. Right now I have 7 hens in it and there's enough room for even more...but it is rickety and I didn't build it thinking that that flat piece of board I put down could be easily chewed through by a rat. I have lights in it, a window, and it is in no way as nice as some I've seen but I don't have alot of money to spend on a coop right now...how do I prevent them from chewing throught the floor...there's two rat holes now that I put bricks over but I know they'll just make a new one... This is my ideal...buy some foil insulation to lay on the floor and then place those square garden squares on top. That will warm up the coop for the girls and the squares...thats my best ideal...HELP!