We are supposed to have low temps in the single digits for the next sveral days. I was looking at the coop and want to keep proper ventilation but want to keep the snow out. All the vents have 1/2" hardware cloth on them and that woks well. Except for keeping snow out so I covered the vents with a double layer of shade fabric. I put a thermometer on the roost and will monitor temps frequently to see what's really going on temperature wise. Before this change I just covered the windward vents completely but wasn't happy with the smell after a few days. Hopefully this will ventilate better in bad weather and keep the snow out and the coop nice and dry.