ams3651,
3x8 spaces are plenty for ventilating a space, and depending on the direction of the weather in your area, it is a possible draft problem. If draft is an issue, a board about 2 inches inside/outside the space is enough to stop direct breezes from blasting in, but still provide ventilation.
Vermontgal,
as far as lighting in winter, I would read over the 'layer management' link in my post above. It will answer most of your questions regarding light. In short though, extra light will usually mean there's a need for some form of forced molting which seems sketchy and increases mortality risks. It seems to be used in commercial applications. We figure now that if we want more winter eggs, we'll just get more chickens.
3x8 spaces are plenty for ventilating a space, and depending on the direction of the weather in your area, it is a possible draft problem. If draft is an issue, a board about 2 inches inside/outside the space is enough to stop direct breezes from blasting in, but still provide ventilation.
Vermontgal,
as far as lighting in winter, I would read over the 'layer management' link in my post above. It will answer most of your questions regarding light. In short though, extra light will usually mean there's a need for some form of forced molting which seems sketchy and increases mortality risks. It seems to be used in commercial applications. We figure now that if we want more winter eggs, we'll just get more chickens.