My Coop. Links above didn't work for some reason.
All the framing is pressure treated. The OSB (walls) and boards they roost on are not pressure treated.
I can't allow them to run free, so they never leave the coop. They seem happy, and lay jumbo eggs almost every day.
Measurements are...
I used regular pressure treated for everything except for what they stand on while they roost. No problems almost two years later.
For some reason, the links won't work... so you'll just have to copy and paste the addresses.
http://webpages.charter.net/hotrods/coop1.jpg...