I agree with who ever said that your septic needs checking and probably /pumping or treating of it stinks but it won't bother the chickens. The old walmonized lumber is safe. I would wash off any of the dust with 10% bleach water and you can always paint or poly it if you are worried.
You need to vent on square foot per chicken. I know it seems like a lot but it isn't. It's easier to block off some of the vents on extremely cold days that it is to add venting later. Also four square feet of floor space is really the minimal humane amount of space per bird.
I paint as I build as I find it not only looks neater finished but also lasts longer.
As for predators. We have the usual possums and raccoons plus coyotes, cougars and there is a rumored fox sighting so took extra time with the coop.
Flying pr editors are a whole other issue, especially for smaller breeds and chicks.
We have falcons and owls here and more urgent we have two hawks nesting in a cedar at the back of our property right now that are busy raiding wild bird nests but even though we have a Komondor (a 100 pound flock guardian dog) I think we might have a problem with them later. These animals hunt to live and killing then is not a solution because there are plenty more where the ones you have came from.
Good luck with your coop I look forward to seeing you progress.
You need to vent on square foot per chicken. I know it seems like a lot but it isn't. It's easier to block off some of the vents on extremely cold days that it is to add venting later. Also four square feet of floor space is really the minimal humane amount of space per bird.
I paint as I build as I find it not only looks neater finished but also lasts longer.
As for predators. We have the usual possums and raccoons plus coyotes, cougars and there is a rumored fox sighting so took extra time with the coop.
Flying pr editors are a whole other issue, especially for smaller breeds and chicks.
We have falcons and owls here and more urgent we have two hawks nesting in a cedar at the back of our property right now that are busy raiding wild bird nests but even though we have a Komondor (a 100 pound flock guardian dog) I think we might have a problem with them later. These animals hunt to live and killing then is not a solution because there are plenty more where the ones you have came from.
Good luck with your coop I look forward to seeing you progress.