Has anyone used this style roof vent in their coop. I doubled the size of my coop and added windows and siding. I am thinking this would be the ventilation in the winter when every thing is closed up. My roof is about 7'-6" high at the peak. The pics on my page are of the coop before the addition. Is this easy to install. I did a decent job on my roof for never doing it before and do not want to dammage it.