We are getting a new barn, so I will have an 8x10 metal shed available for the chickens. It has a plywood floor in it (can be taken out, but would have to be filled with dirt so the floor is even). What can I put (cheaply) on the plywood floor to cover it and protect it from chicken poop? I was thinking maybe a pond liner but I have yet to check prices... How would I ventilate it? I would keep the door open and build a small outdoor area (maybe 10x6), but it does get very hot in the shed during the summer. Could I install a box fan in the top or would that much air flow/wind blowing be too harsh on the chickens 24/7? I'm looking at getting 50-75 hens, maybe in spring. Any other ideas or suggestions? This is the exact shed, it is about 1.5 yrs old now, though http://www.lowes.com/pd_274588-25-LW108FB_0__?productId=3125499 And pictures below are when it was first erected.