Well after a successful first year (2007) for my son in 4H, we have decided to expand and get a little more serious with our chickens and hopefully start collecting some eggs this year. I have a few questions and concerns over using pressure treated lumber for the coop. So far, I have concreted the corner posts and installed the floor joists. I left the front of the coop 16 inches off the ground for them to hang out under the coop. ? #1 Is this OK for them run/lay/lounge and whatever under the coop with P/T wood? I will be fencing 3 sides under the base and extending a run into the used-to-be garden area. Currently planning on copying the 8' x 8' coop with and 8' x 8' covered run. ? #2 How much yard/run do chickens need (planning on 12-15 chickens)? I have rough fitted 3/4" tongue and groove particle board for the floor (Freebie). I will not be placing any treated lumber on the inside of the coop! However, I am working on the roof and this is where I am stuck/stopped/undecided on the rafter material. I have on hand P/T for the rafters which will be supporting 3' x 10' plastic corrugated sheets, but I'm not sure this is safe/right? ? #3 Is it OK to use P/T wood for the rafters or should I use untreated? ? #4 If I use untreated then what do I seal it with? ? #5 Is it OK to use the P/T for the roof for the run? Here are some pics on what we've done so far. http://dtg316.smugmug.com/gallery/4982882_A7ybo#298589432_DDfPC I'd appreciate any comments or suggestions? Thanks.