I am building my own coop and there has been a lot of trial and error during the process. It is almost complete but I have a small concern in the roofing department. I am using plastic corrugated roofing material but it seems that there might end up being small gaps because I won't be able to use the special corrugated wood, that helps you attach the roof to the structure, all the on the sides. It will only work on the front and back. My question is, are a few air gaps in the roof going to hurt? I am always hearing about drafts but then I also hear about air flow. I currently live in East Bay California and the worst weather I have seen so far is temps in the high 30s at night, some strong wind, and heavy rainfall in the winter months (it is raining buckets right now). Should I stop up every hole I see? And if so, how? Spray foam or silicone gel? Or can I leave it and think of it as possible airflow? Thanks!