Living in a northern climate, we get our share of cold weather. Adding a sun room to our chicken coop keeps our feathered friends nice and toasty warm in the winter. the sun room uses the greenhouse effect to warm the coop. It will be 30-40 degrees warmer in the sun room!
We used clear poly-carbonate panels from Lowe's to construct the roof and walls. We also added a roost on the inside so more chickens can hang out in it during the winter months.